Why not approach from a different angle. Rather than passivley looking for work posting ads, look on sites such as upwork.com (US) where clients are activley looking for contractors like yourself and have already posted what they need for you to determine wether you could help them or not? This would produce better and faster results for you.

The other key element there, is the business you are in is a commodity these days, so in order to get clients you need to provide outstanding customer service and be certain you can accomplish the job.

good luck!