You want the [Series] tag to match the Series name in thetvdb.com. For this,
"House" should work (though they have it tagged both ways, so both should work).
If your recordings don't come in that way, you can use a Tag On Import rule to fix the [Series] tag for you automatically. For example, if I record Hawaii Five-0 (the currently running series, not the old one), it comes in tagged as [Series] = "Hawaii Five 0". But this search finds the old series, not the current one. So I have a Tag On Import rule that changes them automatically to "Hawaii Five-0 (2010)". Then, they all come in the same, and the Get Movie & TV Info tool works correctly on them.