The Vietnamese word for north is
phía bắc

Translations for north and their definitions

Bắc	©
1. Proper noun. vi-propn, head=Bắc
2. Proper noun. given name, male, from=Chinese
3. Proper noun. northern Vietnam
Tôi có ra ngoài Bắc, ở gần mười năm. - I went up north (Vietnam) and lived for almost ten years.
4. adj. north; northern
5. v. to place things so that you can climb them to reach a higher spot
bắc thang - to place a ladder so you can climb it
Bắc thang lên mà hỏi ông trời ! - Go get a ladder and ask the heavenly lord! / How in the whole wide world should I know!?
bắc ghế lên bàn - to put a chair on top of a table so you can stand on it
6. v. to place a pot or pan onto a stove, or to take it off it
bắc nồi xuống - to take the pot off the stove