You can't compete in term of price with freelances in India, Vietnam or similar areas, the cost of life is vastly less expensive than in USA or Europe, so in my opinion is not a good idea to search work in those sites.

You should look for local clients, offer yourself for consultancy and development in small/medium companies and then if you have too much work to do you can even hire yourself foreign developers at lower rates that will develop for you at cost of 1 when you will sell the work for 10.