Found this about Gifts:
Gift giving is not just reserved for special occasions; in fact the Vietnamese will find any excuse to give a gift!
Gift giving is a very common practice in both social and business settings. Meet a new friend? Give them a gift! Begin a new job? Buy the boss a gift! Quit your job? Buy the boss another gift! Moving? Buy your friends gifts!
Virtually any public holiday is an occasion to exchange gifts. Gifts need not be elaborate, a book, pen, food, tea, wine and liquor are common gifts. In business, when meeting a new client, try a bottle of Johnny Walker, or a carton of 555 cigarettes, better yet, both!
The Peculiar Vietnamese 