I just tried to do a search on multiple words separated by a space and it gaved me a blank page too, the reason I have not experienced this previously is that I use boolean operators when I search for multiple words. However, when I tried to search with OR as an operator the blank page showed up again, so the search function is definitely not working as it should.
Hmm. It was working fine for me yesterday during the same time you guys were having problems.
It's working fine right now too. To test, I searched for "thermalright OR samsung" and "thermalright samsung" (both without the quotes) and got 6708 hits in less than one second.