Any judgement collection tips?

Hi, I worked for a client for a couple of months and stopped when they stopped payment. I took them to small claims court and won. I am now trying to collect on the judgement. I tried information subpoena's which all came back negative. The company still exists and in active. I figure there might be someone out here that could suggest next steps. Where you in a similar situation? What was successful for you? Can you refer a collection agency? ... Any suggestion would be appreciated. I called multiple law office/ online services for advice but so far nothing legitimate came about.