change single entry visa to multiple entry

We land in Hanoi from Dubai tomorrow and take another flight to Siem Reap Cambodia without entering Vietnam.  Two days later, we return to Hanoi for two days stay in Hanoi. 


My question is.... do we need multiple entry visa or single entry? 


Regards

Vik Chopra

Can you advise how to change a single entry visa to a multiple entry VISA in Vietnam?

Hello,
I purchased a 3 month Visa as I assumed that it would be good for multiple entries, which is not the case. We came to Vietnam via Singapore and were advised at Singapore check in that we had to buy a visa before exiting Singapore..... so we panicked and bought a rush visa. We are wanting to go to Cambodia on 19th August and return to Ho Chi Min City on 24th or 26 th August.... are we able to change existing visa to multiple entries or do I have apply for another visa? My husband paid a total of $410.00NZ for two visas. We were shocked when immigration told us that we could have applied and paid only $25.00 US each on arrival. Singapore airline check in need to be aware that Visas are available at immigration.
Please tell us if we can change to multiple entry or do we have to buy another visa?
Thank you

Hello,

I have applied for a single-entry e-visa and would like to change it to a multiple-entry e-visa.

We are planning to leave Vietnam the 2nd of January for Cambodia for 7 days, and then re-enter the 9th of january. How can we do this in the best possible way?

Best regards,
Hugo Horn Maurin