I don't think all Vietnamese gamble, but it is probably ingrained in their culture and tradition to gamble as part of their lifestyle or something like that. From what I can gather, some of their annual festivities do include casual gambling.
I met alots of people from VietNam while gambling. They online most of the time ,but they only talk on chatbox for example: Primedice,Stake and many sites i've visited .
Are they addicted gambling/ making money or they want a place to comunicate each other?
Or there was no Real Casino on their country?
Im really happy if i can meet Vietnam people here