Search in Settings app does not work and does not bring any resultsWindows 10 insider fast ring build 19541
Please upvote this feedback if you have the same problem on the same build: https://aka.ms/AA70q2d
also it will help a lot if you add more details to the feedback (comment, problem repro, screenshots, video etc)
I would recommend re-registering Settings app.
Or check, if issue still persists with build 19546 released recently.