The Vietnamese players scored one goal in thefirst half and three others in the second half of the match.
With the second consecutive win, U22 Vietnam areleading Group B with six points.
They are scheduled to play against thePhilippines on August 20.
Group B includes Vietnam, Thailand, Indonesia,Cambodia, Timor-Leste, and the Philippines.
The same day, Vietnamese female footballers alsosecured a 3-0 victory against the Philippines.
Both men and women’s football teams aredetermined to win the title at this year’s games.-VNA