Search engines are not necessarily helpful for torrent sites. As an example, after Isohunt went down, Google started displaying "isohunts" as the top search result for the site. As far as I can tell, it is just a clone of Isohunt that contains no legitimate torrents. I also recall it being reported that the site was serving some kind of malware whenever it was visited a while ago.
What we really need is sites that contain curated torrent sites with constantly updated information on each one, to stop this kind of thing from happening. Pirate sites themselves are also lacking in curation. Check out the gaming section on TPB right now. Pages and pages of torrents that are all completely fake, submitted by the same accounts. This happens regularly.
So we need a search engine that only displays pirate sites.