seach engines that don't suck

Hi All, So I've been using my own php to search my site (http://hiptingle.spydigital.com) and for a while it was fine...But recently I put in a logging system just to see what people were searching for and realized they aren't finding what they're seeking. I wrote all search code to split words on commas and then builds SQL using LIKE statements (i know, i know it's bad but i was a newbie when i wrote it). I checked out PHPDig and it's fine but I was wondering if there's something out there (a class or a group of classes) that are a good stub that I can expand on. I guess what I'm looking for is something that I can feed blocks of text and it will strip out all code and build indexes. That way I can still search the fields I choose but have an index and not include code (like img or href tags). Or if there's something totally fly that I don't know about do tell. Thanks, Colin Olkowski