In case someone missed it...
Nowadays when you search on The Pirate Bay, if you get zero hits as a result: try again.
Often the search doesn't actually get its proper results returned until about the tenth time or so that it is performed.
It has been like that for months.
TPB's new owners are apparently incompetent. :-/

Also, if TPB seems to be "down" at any time, it is a good idea to try their official Tor address (http://uj3wazyk5u4hnvtk.onion/) before giving up, as it has occurred that their regular address was down while they were up via Tor.
That does of course require Tor-capability, which can be had by using e.g. the official Tor Browser Bundle: https://www.torproject.org/projects/torbrowser.html.en