Ho Chi Minh City: DPR Korea boss Sin Ui-gun insists there is still much more to come from his side in the AFC U-19 Women's Championships despite seeing them brush aside Vietnam 5-0 at Thong Nhat Stadium.

DPR Korea went into the clash with the hosts sitting top of the table boasting a perfect record following victories over Korea Republic and Australia.

They proved too strong for Vietnam as, after Jon Myong-hwa's early goal had given them the lead at half-time, they made their superiority count with four goals in the second period.

Yun Hyon-hi's header extended their advantage midway through the second-half and further goals from Kim Un-hwa, Kwon Song-hwa and another from Yun, again with her head, sealed the points.

It means DPR Korea now enjoy a two-point lead over Japan at the head of the standings and victory over their East Asian rivals on Thursday at Thanh Long Sports Centre will see them prise the trophy from their opponents' hands.

And Sin feels they can still raise their game to greater heights over DPR Korea's remaining two contests.

"It was not our best performance, there is still room for improvement," he said.

"We did not show our full strength, you will see that in the next two matches. I did think that we could win by such a big score though."

For Vietnam, it was a third consecutive defeat as they continue their search for a first point in the competition.

Boss Nguyen Hong Tham, though, was pleased that his side did not capitulate and kept battling right to the end despite the one-sided scoreline and the quality of their opponents.

"In this game our players really did their best but the rest day was very short so they cannot recover and DPR Korea are a very strong team," he said.

"The most positive aspect was the spirit. Although they are very tired, they did their best."