This site has an advance search option it allows for searching of tile and content and of just topx files select the gear icon beside the search button
when I'm browsing or schecking new downloads I use the downloads forum but when I want to find something specific I use the search
That helps for the topx files that have tags or whose titles indicat they cover the desired area of study. But at present there are far more files that have nothing like even minimal information.
I use the downloads forum much as you do when I am checking new downloads, but even some of the newest downloads (especially those created by specific module creators) have little if anything in the forum or download blurb page beyond the title of the module.