Debate club

I don't think Vietnam is quite ready for a debate club unless the topics are carefully selected. The skills for debating require a fairly good knowledge of the target language, so your circle would be rather small. And any sensitive subjects debated with foreigners present could cause problems. Informal discussion among friends and compatriots is one thing, but a structured debate suggests organization.

Thank you so much for this advice^^
Yeah i know there are a lot of problem arise so i think this may be not the good time to start this plan at least.

I think a debate club would be a great idea.
I understand that you want to start this club in Ha Dong.
Maybe you can try to expand your area and attract people from all over Hanoi.
A club like this certainly would need people who master English very well in order not to become a glorified English class.
You also need people with at least a basic idea of 'critical thinking' (i.d. the capacity to weigh pro and contras of arguments in an unbiased way ).
There are ore things to consider but at least you have starting point.
Best of luck.