Try reporting him to the police department as a missing person. Check with your local hospitals. Look at your credit card bills and see if there is any recent activity. Check with his family and friends. Check with his employer. All of these options are free. Good luck!
Did you try his job or friends? DOT and DMV records are public records Did you ask his neighbors or his mom? Try Facebook! If you cannot find him it's cuz he does not want to be found. Sorry but move on with your life. There are many husbands that abandon their wives. It's not uncommon