What do I need to open a restaurant in Vietnam (official documents)

Hi, I had some restaurants in Vietnam before but not on my name! I just want to collect some information. I like to open a takeaway small shop (food) what do I need and what are the costs?
I need business registration (foreign), food certification, probably an accountant. What can I more expect and please some tips are welcome.

You would be better served by contacting a competent business law attorney in the city.  The information would be more accurate and valuable than the ramblings of the group here although any further information received here would be worth everything that you paid for it.