No amount of obedience training is going to stop your dog from biting dogs or people.
I get so many calls from folks who are struggling with aggression with their dogs and they have started watching our videos and started doing obedience training, leadership skills,household mgmt etc and making improvements on their dogs, BUT.....the biting is still there.
When it comes to stopping biting though you need to learn how to properly punish (yes there is a proper way to do it) in order to stop the biting.