OK, so I might know why you weren't seeing old stuff. I've adjusted the search some. It will search, find and show everything, even threads that are from 16 years ago. If someone wants to narrow the search to more recent content, one can do that with the since date option.
I haven't played with it a lot, but it seems to do pretty good.
Searching by title might be even better in many cases. I suppose one would just have to try it. There's a lot of information on the site. 1.8 million posts.
Give it a try now Bluehair and see.