There's no such thing as wrong or right Thai spelling in romanisation. There's no standardisation as e.g. Hanyu Pinyin for Chinese or Vietnamese wholesale conversion. The correct spelling is อาจารย์ Ch and j are actually considered the same in most common Thai romanisation, e.g. Chulalongkorn and Chakri are actually pronounced Julalongkorn and Jakri.
) and herbs made by famous monk who die long time ago ....those are my investment ...i can sell them to collectors for good price . 
