I'm not familiar with your stated device, but on a Nexus 4 my similar problems were solved with:
Settings -> Language & input -> Voice Search ; uncheck "Block offensive words"
Hopefully you can find such a setting in your Android version, assuming that it gets synch'd with the cloud storage. Perhaps it's only enforced on download and playback? Do other devices also censor the playback? If so, then you might want to re-upload the music after making the settings change suggested above.