It takes patience. A lot of patience. lol
My Sass thought I was her teething toy and I was so happy when that stage was finally over. I tried many different things - Like you, I had all the chew toys I could find and when she would bite me I would say "No Bite" and move away from her for a few minutes and ignore her. I also tried saying "ouch" loudly, but that seemed to make her more excited.
I don't actually know if I ever trained her stop biting me or if she just outgrew the phase. lol She will be 3 this year and when she plays with me she is so gentle. She does still play bite with me, but never with any pressure.
I guess my advice is to have lots of patience and just keeping trying to let her know she is not supposed to bite you.
Good Luck!
