Whenever you go to google.com.. You see the search bar.. You enter the name of the torrent you want and then google gives you the results.. But these results are not all that accurate.. If you really wanna get the accurate results then you gotta type somethin extra!!
After you enter the name of the torrent in the search bar you have to type "filetype:torrent" next to it..
And then hit the search button.. When you do this google searches for the torrent files on all the torrent sites..
If you wanna search for the torrent of pirates of the caribbean.. You have to go to google and enter "Pirates of Caribbean".. Then "filetype:torrent" just after a space and then hit the search button.. (See the image)