...seems to me a search for RSS feed should turn up that "We need RSS feeds for this site." thread...
I don't think the phrase
RSS feed appears anywhere in that thread; it's always
RSS feeds. Likewise, an all-forums search for
job turns up no results, even though a a search for
jobs turns up 30 hits. The software appears not to consider a matching portion of word to be a match for a search word. (Which is probably actually as it should be; otherwise seaching for, say,
hi would turn up all the results containing
his.)