Create rule for chatbot using chat GPT

I am trying to train Chat GPT to use Vietnamese, but I encounter some problems. Can anyone suggest how to train Chat GPT to speak a proper language?:

  • Can’t use the Vietnamese pronoun correctly.
  • Can’t recognize mistakes and ask clarifying questions. It just guess the meaning and gives an answer
  • Sometimes it can’t continue the conversation where students left off. May restart the conversation if we ask for translation many times or go off topic.