A court in Vietnam's Mekong Delta has sentenced three women, including a woman and her daughter to 33 years in prison for trafficking a girl to Malaysia as a commercial sex worker.

Nguyen Thi Thuy Trang, 30, was sentenced to 12 years in prison, while her 62-year-old mother Vo Thi Beo received 10 years, both for trafficking a 15-year-old girl to Malaysia to work as a prostitute.

"Their 40-year-old accomplice Pham Thi Hanh was sentenced to 11 years in prison for the same offence.

"All of them admitted their crime at the trial,’’ Tong Thi Phung, the court's secretary, told newsmen.

Trang left Vietnam in 2005 for Malaysia, where she worked as a bar manager and met Hanh in 2014.

The pair devised a plan to recruit young Vietnamese girls to work as prostitutes in Malaysian bars.

According to the indictment, Hanh returned to Can Tho and persuaded the 15-year-old girl to work at a cafe in Malaysia.

"The girl agreed and was transferred to stay with Beo in Ho Chi Minh City.

Trang demanded the victim's family pay about 900 dollars to return the girl to Vietnam.

The court said that the victim's family agreed, but reported the case to the police.

It added that in July, Trang brought the victim back to Ho Chi Minh City and was arrested.

The court said Trang was also involved in trafficking five other girls to Malaysia, but an investigation into those cases has not yet resulted in a trial.