since Bit Che connects directly to the sites to search them, you're going to have to "Open Source Page.." and read user comments, etc from the source site if you are worried about a torrent being fake.
there is no possible way to reliably filter results since it only displays the search results from the different sites, it does not process the actual .torrent (unless you View a Torrent's Details, but then it only reads the header information and not the entire .torrent file).. and since the search result title is not a valid indication of exactly what the downloaded .torrent will contain, this makes it impossible to filter based on search result title alone. search engines themselves that handle and process the .torrent file should be the ones removing or filtering torrents.
there might be a site out there already that keeps a database of known fake torrents. if you are worried about that, i would check with this site about the torrent you are interested in..
also, to avoid fake ones, probably the best thing to do would be to join private torrent sites..