Hi Emanon. Welcome to Siam Pinoy Community!
You are armed with good qualifications as you got your job experiences in other countries. The job opportunities here in Thailand are not only teaching jobs, there are also jobs for engineers, IT personnel, web designers and other professions. With your job experiences, I strongly believe it is not advisable for you to compete with those who got the teaching experiences already. Stick with your line of work, your forte.
I think you just have to find the right companies to which you can submit your application, keep your CV "flying"...and try to be at SPC website regularly, make it a part of your daily routine.
Good luck!