Chung Thanh Nguyen Do (Bulgarian: Чунг Тханг Нгуен До; born 23 May 2005), also known as Trần Thành Trung, is a professional footballer who plays as a midfielder for V.League 1 club Ninh Binh. Born in Bulgaria, he represented his native country at youth international levels before opting to play for Vietnam in 2025.
Club career Born in Sofia to Vietnamese parents, Do started his career aged six in CSKA Sofia academy, before moving to Slavia Sofia.17-годишен талант: Мисля, че съм готов за мачовете в efbet Лига Starting as a goalkeeper, he switched to midfielder because he wanted to enjoy the game more.Чунг Нгуен До: В ЦСКА не ми даваха много шанс! Иван Иванов ни учи на футбол, а не да ритаме топката In the summer of 2022, it was reported that Barcelona are interested in Do.Трансферен удар! Барса взима наш национал от Славия In January 2023 he was promoted to the first team and joined the winter camp.Двама 17-годишни играха за "Славия", единият вкара Chung completed his professional debut in a league match against Pirin Blagoevgrad on 13 January 2023.Славия оскуба "орлетата" от Пирин и влетя в Топ 4
On 27 July 2025, Do was transferred to V.League 1 club Ninh Binh, signing a five-year contract with the Vietnamese side, for a reported transfer fee of €500,000.
International career Bulgaria Youth Being eligible for both Bulgaria and Vietnam, Do represented Bulgaria at youth level. He was called up for Bulgaria U17 in 2021 and helped the team to qualify to the European U17 Championship.Юношите продължават напред за Евро 2022 Chung was in the squad for the 2022 UEFA European Under-17 Championship. In September 2022 he was called up for Bulgaria U19 for the 2023 UEFA European Under-19 Championship qualification matches.Стойков обяви групата на националите до 19 г. за квалификациите за Евро 2023
On 18 March 2023, he received his first call-up for the Bulgaria U21 for the friendly tournament Antalya Cup between 25 and 28 March 2023.
Vietnam On 6 August 2025, Do's request to switch international allegiance to Vietnam was approved by FIFA. On 25 August 2025, he was called up to the Vietnam under-23 national team for the first time to prepare for the 2026 AFC U-23 Asian Cup qualification. However, he was dropped from the final squad due to an injury.
On 13 October 2025, Do made his debut for Vietnam U23 in a friendly match against Qatar U23.
Personal life Do has Vietnamese citizenship since 2018, under the name Trần Thành Trung. His brother Thang Chung Chan (Trần Trung Thắng) is also a footballer and plays for his former team Slavia Sofia.
Career statistics Club
Club performanceLeagueNational cupContinentalOtherTotalClubLeagueSeasonAppsGoalsAppsGoalsAppsGoalsAppsGoalsAppsGoalsSlavia Sofia IIThird League2022–23200–––200Third League2023–2470–––70 Total270000000270Slavia SofiaFirst League2022–2316010––170First League 2023–2411000––110First League 2024–2531220––332First League 2025–2610–––10 Total592300000622Ninh BìnhV.League 12025–2621220––232V.League 12026–271000––10 Total222200000242Career total10845000001134
References