for the SEARCH here, it is a tricky thing to use. If you search for Tor ( as one word only) nothing shows as you said.
If you add extra words, Tor for stealth, then you get the threads. Or, use the Google box on the search with the tor for stealth. You get all the info.
The other thing about Tor that I have noticed in the past it is ridiculously slow, I have never found a use for it unless you're paranoid about the Government