Teach your dog to come?

I have some of the same problems with my dog (except he's not so nice when he sees a rabbit) and what i did was teach him to sit and stay and once he was good at that i got a treat and made him sit and stay. I wouldn't give him the treat but I let him know that i had it. Then i walked away making sure he stayed and then i called for him to come. He came and sat. i fed him the treat and i repeated those steps until i felt like i didn't need the treat anymore and he still comes. try using the same hand motions because my dog responds well to the hand motions i always made when teaching him come. I hope this helps!