Some content, the net exists obviously, you use search engine but can't find.

Intermediary transaction SEO diagnosis Taobao guest Cloud host technology Hall

Information on the Internet, in order to find the necessary information in the shortest possible time, we will use search engines to help. At present, major search engines are constantly improving search technology and expand the search function, so that we use easier and more convenient. However, we often find that some of the content, the Internet obviously exists, but you use search engine but not found (including this situation: although the results of a lot of search, but not the information required). What is the cause of this?

Reason one: Choose the wrong search engine to search
To quickly retrieve useful results, choose the right search engine not only can make you more than half the effort, but also can make you less detours. The current social division of Labor has become more and more sophisticated, even the search engine is no exception, all kinds of professional and special search engines are constantly emerging, no one search engine can not be exhaustive, even if the so-called omnipotent Google will have the time to be helpless. But now many friends have such a problem, that is, completely disregard the content of the search is like the direct use of Google search, really think of it as a panacea for "Xian medicine", so the chances of the wall has increased naturally. It can be said that Google itself is growing and improving, because it is in many areas is powerless.

Countermeasures: First, we need to make a reasonable assessment of what will be searched. Look at the search information is more obscure, whether the need to use a dedicated search engine? When using a popular search engine not to find the right information, consider whether the current search engine is applicable and whether you need to switch to another search engine to try again. In addition, usually also need to learn more about the dynamics of search engines and do a good job of collecting and sorting, so that use can be handy.

Reason two: Error using search keywords
Using the correct keyword is equal to half the search success. There is a double meaning to use search keywords here: One is to not fully understand and grasp the content of the search, so that the wrong use of keywords, such as the new Year everywhere people say "Guanghou", but what does the Dragon horse mean? If you don't think about it, you're directly in Google (this article, unless specifically stated, The methods described are used by Google as a search engine, the same below) direct use of "What the Dragon Horse" as a search keyword, you will get meaningless results, but just think, this problem seems to be related to some allusions, and then use "Spring Festival Dragon Horse from" to search, then the first result is the answer The second is to use a typo. If you use a keyword that contains a typo, you can't find exactly what you want. Similarly, if a Web page author uses a typo, you won't get a satisfactory result if you search using the correct spelling method.

Countermeasures: First of all, to develop the habit of thinking, to learn to analyze the problem, to see what the content of the search and what connection is relatively large, and then decided to use the keyword. As for the problem of typos, although there is no particularly effective way, but also can try to look up the dictionary, thinking about using habits to speculate on the common spelling methods to deal with. If every time you feel that there should be a lot of content online, but not search results, you should first check whether there are typos.

Reason three: no correct participle
Even if the search engine's technology is so advanced, but it is always a program, will not understand your intentions, but very mechanically from the database to retrieve your query information. So when you enter some similar "Beijing to Chongqing train timetable" search keyword will not find results, because the search engine database does not have such a keyword, which requires us to make a reasonable participle. As we all know, the Chinese text we use is not similar to the English space, such as the explicit word of the boundary symbol, this phenomenon occurs: a keyword in different ways to split the results, the difference is relatively large.

Countermeasures: Do not want anything directly input what, not to use the plain you want to search. If the search keyword is longer, it should be appropriate to use space for participle.

Reason four: Technical reason search engine cannot crawl
Most search engines use a search robot called Spider to crawl content on the web and put it into the search engine library. When encountered by a large number of Flash, script, ASP and other network languages written Web pages (BBS, the majority of the database to write this way), the search robot will stop crawling Web pages, because this is to avoid a kind of call "search Robot Trap" (Spider Traps (this error will allow the search robot to crawl endlessly and waste a lot of time without exiting). If it happens that the Web page you are searching for is written by the above network language, it will be reactive.

Countermeasures: In general, these sites will provide site search services, you can try to login and then search.

Reason five: Do not crawl because of other reasons
If you are searching for something of commercial value, even if the search engine can crawl, but based on commercial interest reasons may give up the crawl. Another situation is a user name and password login to access the site, the search robot can not automatically complete the "input", so it can not access (of course, for copyright and privacy factors).

Countermeasures: When you encounter a search without results, you first see if the above situation, and then make a choice.

Reason six: Use a stop word
Perhaps many friends in the search did not notice a problem, this is the use of the word stop. The term "Stop word" means that because the keyword is too common and too often used to search for meaningful results, the search engine automatically ignores these words when you enter a stop word into the search box. Each search engine has its own definition of the word stop, but it is commonly used in language adverbs, conjunctions, prepositions, such as "Yes", "" and so on.

Countermeasures: If you find that the search results that appear do not fully contain all of the keywords you have entered, check to see if you have used a deactivated word. In case you have to use a stop word, please enter double quotes in English (do not enter the Chinese "" symbol) or "+" to connect the stop word with other keywords and search again.

Reason Seven: The information in the Search engine library has not been updated
Each search engine will be regularly crawled through the search robot to crawl the page, this time not only the search engine is not the same, even the same search engine of different mirror site update time also has a certain difference, some short cycle, some long. If you happen to search for the content, the search engine has not had time to update, then there will be a limbo and can not find results.

Countermeasures: Try to choose the mirror site to update the time quickly to search, as to how to know the update speed of the mirror site, in addition to their own use in the accumulation of experience, but also from a number of professional search knowledge learned. If you want to search for content that is time-sensitive, consider using a professional search engine that is updated more quickly, such as a search for news in the News of Sina and the BBC.