• To address people formally, use Mr. or Ms. or a title plus the first name. There are several titles of respect in Vietnamese, but they aren't used in English.
• "Thua" (meaning please) is added in front of the first name to show respect.
• Women do not shake hands with each other or with men. Physical contact between grown-up relatives or friends (both males and females), or between the same or opposite sexes, is not a common sight.
• Many may greet by bowing slightly to each other, they may join hands. Usually, higher ranking people are greeted first (the family head).