Chances are you can find pseudobulbs of this species at general herbal, tuber, & bulb store at Bangkok's renowned Chatuchak market. Eulophia andamanensis is a widely distributed species throughout Thailand, into Indochina (Laos, Cambodia, Vietnam), Myanmar (Tenasserim) and also Northern Malaysia. My gut feel is it can adapt and spread on disturbed forest or grasslands just like Spathoglottis plicata occupying degraded land in Malaysia and Singapore.
Four or five years ago this guy in my neighbourhood gave me a fistful of pseudobulbs from his sad rotting clump. It thrives under general succulent care ie. if the plant is in leaf i water, else i don't. Over the course of 2 years, the pseudobulbs spread to fill two 12 inch pots. Typically, it stays dormant for about 4-5 mths. Only recently did it flower under severely underpotted condition. There appears to be 2 color forms (light green and brown) in the clumps.