ASP through keyword matching related articles

The function to achieve is this: open an article, according to the keyword set by the article, to match the title contains one of the keywords of the article or the label contains one of the keywords of the article do not know how to do a circular search

Suppose the article title field is title, the tag field is the tag article table wz
Friends who want to help with the same article tags to implement related articles:

<%
Dim Kk3,key
Kk3=split (Mywz ("A_tag"), "")
Set Xgwz=server. CreateObject ("Adodb.recordset")
For i=0 to UBound (KK3)
KEY=KK3 (i)
Bsql=bsql & "Artic.a_tag like '%" &key& "% ' or"
Bsql=bsql & "Artic.a_title like '%" &key& "% ' or"
Next
Bsql=left (bSQL, (LEN (bSQL)-3))
Mysql= "SELECT top of * from Artic WHERE (" &bsql& ") Order BY a_id Desc"
Xgwz.open mysql,coon,1,3
%>