Team's nickname(s)
Đội tuyển quốc gia is what the Vietnamese called the team usually. It's okay to use that. "The Fiery Reds" and "The Golden Stars" is what Vietnam is known for in English media. It was also said by the English commentator just before the start of Vietnam vs Malaysia at the 2014 AFF Suzuki Cup semi finals in Hanoi. You can check in AFFSuzukiCup page on youtube if you watch the full match video. Lets decide on the nickname and stick with it and stop changing it once or twice a month.