Have you tried searching for something you are positive is in the database (as in, you saw it
here, then searched for it)? Or are you just looking for things that could possible be not in the database?
I just searched for a file I saw on the sims page, and it came up fine, which tells me that the search engine is working as of now. I'd also like to remind you that the sims database was cleared from when we moved from 6.0 to 7.0, so if you're looking for something that was on 6.0, it's possible that the author hasn't re-uploaded the simfile.