Huynh, A.T. and Nguyen, T.H.H. 2025. FACTORS AFFECTING THE OPERATION OF PROFESSIONAL LEARNING COMMUNITIES OF ENGLISH AS A FOREIGN LANGUAGE TEACHERS AT VIETNAMESE ECONOMICS UNIVERSITIES. VNU Journal of Foreign Studies. 41, 1 (Feb. 2025), 166–185. DOI:https://doi.org/10.63023/2525-2445/jfs.ulis.5349.