Hi there, are you looking to put the game in Thai? There may be an option in the game's settings that can put it into English, but I don't think there is a text-to-speech option, unless you can find a software that allows for it. As for putting the game in Thai, I don't believe there is an option to do that on the switch. On the PC there is mods that allow for the game to be translated into Thai however. Here is the link to the mod that puts it in Thai on PC! https://www.nexusmods.com/stardewvalley/mods/7052