The semifinal, broadcast live on VTV3 on 8 November, featured solo performances and duets with established Vietnamese artists under the theme "New Energy."
Five contestants qualified directly: Khanh An, Hai Dang, Xuan Dung, Thu Huong and Moc An.
But in a surprise twist, the judges exercised their special save to bring Thu Ha into the final, recognising her distinctive folk vocals and strong performances throughout the competition.
The six singers will now compete for the title at the grand final on 22 November.