I just put this into the browser bar> "geoip on Vanilla forums" The result > http://vanillaforums.org/discussions/tagged/geoip/p1 . This is the only way i can search the Vanllia Community.
As a temporary fix for the Search results being broken, I just use Google. For example, I wanted to search for "do-follow links" but it wasn't working in Vanilla. So I went to Google - typed "do-follow links Vanilla forum" and found what I was looking for. Hope they get it back up soon.