welcome to YT...glad you found us! I think it is ok for you to post that you are looking for a mix breed...but many breeder on here doesn't breed mix breed unless it was an accident..and many will tell you that if you are looking for a mix breed than check out petfinder.com to rescue one...here is a link to yorkie/yorkie mixes in are around your area...hope that helps!
Yorkie, San Jose, CA: Adoptable Pets: Petfinder