Sql Query statement.........

I have a simple question that bugged me for a while. I need to query a MS Access database that has two fields. Each field contains a bunch of words, I
would want to query by fields using one or more keywords entered by the
user. So, for example, if the user enters "Query fields containing these
phrases", the perl script should bring up the fields from the database
that match these phrases or keywords. Here comes the big question...

How should this sql statement look? Please advise. I thank you very much.