If you're having trouble searching on Apple Music, you're not alone. Users from around the world are reporting that they are unable to search the service, with some saying that typing in the search bar does not return results. Others are noting that while they do receive results, they get a blank screen after selecting an artist or track.
Several users have taken to Twitter, asking the official Apple Music Help account for support:
@_benphilips We'd like to take a look at this with you. DM us which device you're using and we'll go from there.— Apple Music Help (@AppleMusicHelp) February 1, 2016
Some of us here at iMore have encountered the problem as well. At the moment, there does not seem to be a fix or workaround for the issue, though it should be noted that it only appears to be affecting iOS users, with iTunes on Mac and PCs still returning expected results.
Source: Apple Music Help (Twitter)