"Bao Bao" is not a Vietnamese word or phrase. However, "Bảo" is a Vietnamese name that means "treasure" or "jewel". Additionally, "Bánh bao" is a Vietnamese dish that consists of a ball-shaped bun filled with pork or chicken meat, onions, eggs, mushrooms, and vegetables. It is often compared to Chinese baozi, but it is generally larger and has a wider variety of savory fillings.