Yes, the Familiar Song Title Filter in the top right of the StylePicker is a good place to put in a song name for Style suggestions. You could also apply your own filters via the dropdown menus in the StylePicker found under the Filter String. As for getting just percussion, you can always mute all the other instruments via the bar settings window by right on the measure where you want the mute to apply, then setting all desired instruments to mute. When you want them to come back you, you'd do the same thing on the measure you wish for them to return on and use the back to normal option for those instruments instead.

Cheers,
Ember