When looking for posts on SubSim, I find it easier to use an external search engine with the phrase "site:subsim.com/radioroom SearchTerm", and I can usually get rather appropriate "hits". When looking for a mod, go to the "Mods" section and "Search" directly there, using the author's name if known, or a portion of the mod name. If nothing is found that way, use the external engine again, with the same set-up, and then sift through the chaffe you find...