khỏe không

how are you?

Typed without accents: khoe khong

Meaning

Highlighted words are what Saigon and Hà Nội say differently.

how are you?
interjection

Put the other person's word in front: Chị khỏe không? The answer is Khỏe, cảm ơn with their word.
- Saigon
  Ba mẹ em khỏe không?
  
  Hà Nội
  Bố mẹ em khỏe không?
  
  How are your parents?
- Dạo này anh khỏe không?
  How have you been lately?