Of course there are many ways to send / remit money to vietnam. The main thing is that the channel of remittance must be trustworthy. Saw a report on their business magazine the other day while i was in HCMC, the amount of remittance from overseas vietnamese back to Vietnam was US$3 billion for first 9 months of this year. So this year, its expected that remittance from overseas vietnamese will exceed the US$3 billion mark. Thanks to all the overseas vietnamese, the local vietnamese can seat at the cafe all day and waste their life away
(btw, your gf or spouse in singapore is considered overseas vietnamese also )