Hi,im Philippine national,im planning to go vietnam around November and as i know Philippine national was free of staying within 21 days,my problem is i been in Vietnam last March,can i able to come back again,or i still need to apply visa,and if for example i can enter Vietnam without visa again is that after 21 days i must exit Vietnam to get a multiple visa so i can stay more than 3 months?hope anyone can give me advice..