The Find & Edit Keywords tool has been broken for two days now. More specifically, when you add any "performance history" qualifier whatsoever to your search criteria, you get the "No matches found" error message. Doesn't matter what criteria you specify (from "zero impressions yesterday" to "greater than zero impressions yesterday," etc.) -- same message.
Contacted Google and got the "Sorry, our engineers are aware of this and working on a fix". But that was two days ago, and nothing has changed. Anyone else got info from Google on this?