베트남에 이항서 감독은 언제 베트남 축구 감독직을 맡기 시작했나요?
On 29 September 2017, Park was appointed as head coach of the Vietnam national football team. Also in charge of the under-23 side, the team reached the finals of the 2018 AFC U-23 Championship for the first time in history. At the 2018 Asian Games, the U-23 side also managed to make it to the semi-finals and finished fourth for the first time in 56 years with Park being widely praised for his management. On 15 December 2018, Vietnam senior team under Park's guidance won the AFF Championship after defeating Malaysia by 3–2 on aggregate at the second-leg finals in Mỹ Đình National Stadium of Hanoi. This was Vietnam's first regional championship in ten years.
29 September 2017