SEA Games champion Dao Hong Son made the most remarkable victories with allthree wins by submission in the men's U56kg.
"It was a hard-working day. But the result was so sweet, with threesubmission wins. Thank you for watching and encouraging me," Son posted onhis Facebook page.
Earlier, world champion Phung Thi Hue secured gold in the women's U45kgcategory.
Hoang Thi Nhat Que won the women's U70kg class and Pham Tri Dung topped themen's U69kg pool.
The Vietnamese team also brought home one silver by Pham Le Hoang Linh in the men'sU85kg and 11 bronze medals.
On the last day, athletes will vie for medals in the men's and women's teamevents./.