"Bump the thread". If you have not gotten a response at all, a partial response, or a response that is not certain (like "I think this is right but you should get an answer from a subject matter expert or Moderator), you can get the thread to show up as new by replying to your own thread. Ask the question that has not yet been answered. Doing so places it back in the "New Posts" queue. The New Posts is where you can see posts that you have not yet reviewed. That is usually how you can get an expert/Moderator's direct attention. Sometimes Moderators/experts are away from the forum for various reasons, bumping the thread "brings the question back up".