Best site for finding a dog?

Okay, I have been looking on rescuetheanimals.org through all the animal shelters for several counties around me. I looking at every dog they have. I would say roughly, 60% of what they have is some kind of Pit mix, 30% is Chihuahua mix, 8% Random Large breed dogs, 2% very old small dogs. I have no interest at all owning anything with pit in it, not really fond of Chihuahuas, I don't want any large breed dog, and I don't want to make an emotional investment in a dog that might die in the next couple of years.

I have tried using adoptapet.com to locate a dog to go check out, and it keeps saying no dogs match. It also does not work very well. If I choose, "YOUNG" it comes up with 10 year old dogs.

I also went down to the local SPCA and looked through their dogs and found nothing.

I want to go dog hunting today, but I can't even find a place to start. Can anyone recommend a good site for searching?