Like everyone said and place an ad in the newspaper with a reward! Most good people will not accept the reward. Check the pound and shelter too! Also put some food outside. I'll say a prayer for you and your dog too!
Make some lost dog signs on the computer and put your dogs breed, name, picture of dog, your number, your address, or and your email. Then tape them all over town. Or you can go to the pound, but I doubt you will find it there.