Downloaded songs

[YouGenius]

I've downloaded Global top 50, today's top hits, mint, peaceful piano to my device. But when I go online and search for different songs all those playlists will soon be gone on the "recently played" section and there is no way for me to play those playlists when I go offline. Is there any way for me to search all the playlists I've downloaded while I'm offline or should I really have to go online and search them back so that they'll appear again on the recently played section?