Unfortunately Obsidian Portal still haven't restored their search function, you'll have to trawl through all the pages to find any T2k campaigns. Or you can look at the map provided when you hit the "Games Nearby" tab and try your luck.
Obsidian Portal is better than it was a few years back and it makes for a good campaign tracker and info blog but there are still some problems, such as the lack of search function, people have been asking for that since 2013
