Well this is my little tutorial for anyone that wants to add a search bar to opera for easy searching of a torrent site.
Go to your torrent site and right click on the search bar like so :
Click create search.
When the box comes up add a title and a keyword:
Then go to the search built into opera in the top right hand corner and choose your torrent site and then search for whatever you want
And that should work for all torrent sites
It also works if you type the keyword you chose in the address bar and then whatever you want to search for after it.