First,

Did you set the weights in the Links table (in the Admin).

Then, did you re-index.

If you read the forums here, you'll see that the 'and' searching is not working properly, and has not for the 1.11 release. Searches are returned in score order, and with an 'or' search.

To get an and, you need to use the +/- notation.

Search-ni uses a non-indexed mode, and you need to put weights in the category and links tables in order to search using either of the programs.

http://www.postcards.com
FAQ: http://www.postcards.com/FAQ/LinkSQL/