Thai Int'l and Thai Air Asia, 100% no way unless you are a Thai citizen. I think the same too for Bangkok Air. I think One-Two-Go (crashed in HKT) takes foreigners, but I would stay far far away from that place. I now live in Bangkok and the closest I could find a job was a commuting contract in Japan. There are some jobs in Hong Kong that would not be a bad commute if you are just looking to live here.