You can get Teddiursa and Combee using Honey. Honey is found in the honey garden at route 10. If its your first time, talk to the girl and she will give you honey to put on the tree. It will take a while for the honey to attract wild pokemon, so you might go complete some other urgent missions, or simply take a stroll through Cragnos Mines. After you come back, tap on the tree and there might be some wild pokemon to catch.