eBay worldwide search engines are all down. However, there is a way to get around it.
Go to the "advanced search" (next to the search bar. Type in what you are looking for, and then, check mark the "Title and Description", and voila, everything pops up. The left hand "refine search" works, so you'll be able to filter your searches.
Seems that a lot of auctions are closing at less than the usual price, so there are bargains to be had. Bad for the sellers though.
I hope that helps.