HUU NGHI, Tran; HUYNH HONG NGA, Ngo. FACTORS INFLUENCING VIETNAMESE EFL TEACHERS’ PROFESSIONAL DEVELOPMENT: A QUALITATIVE STUDY IN THE MEKONG DELTA. Journal of Science Educational Science, [S. l.], v. 71, n. 1, p. 107–117, 2026. DOI: 10.18173/2354-1075.2026-0011. Disponível em: https://hnuejs.edu.vn/es/article/view/911. Acesso em: 30 jan. 2026.