Maybe try getting seeds from Comsan Can on FB. There are a few others, but many have had good results from his.
There is a fella Kesornthip Nursery in Thailand whom sells seeds.
Rick
"Many times a day I realize how much my own outer and inner life is built upon the labors of my fellow men, both living and dead, and how earnestly I must exert myself in order to give in return as much as I received"