Why don't you take a chance to be a millionaire by buying a 5000Vnd lottery ticket? Some streets are lined with lottery ticket sellers at little desks waiting for customers on motorbikes. Other sellers wander the streets with a handful of tickets. There is another black lottery ticket called So Đe which is not run by the goverment and is therefore illegal.
The most common conversation in coffee shops and amongst Xe ôm drivers is lottery lucky numbers and lottery results. Gambling is an increasing problem in Viet Nam, that's one of the reasons why many people have lost their homes and families.
If you do try your luck, make sure you don't get addicted. Hopefully you will be the lucky one!