Search out a physiotherapist or a chiropractor who also does soft tissue work.
Thai massage is worthless, usually, because they are trained well, mostly don't give a <deleted>, and don't listen to you. It's their way or the highway. They don't think the (farang) customer should tell them how to do their job.
And in tourist areas a lot of them are just there for the happy endings that they offer their oil massage customers, so they don't really want to be massaging anyways.