Nguyen, T.A., Le, T.T., Vang, M.D., Phuong, Y.H., Huynh, T.T.A., Nguyen, T.H. and Pham, T.T. 2023. Vietnamese EFL high school teachers’ perceptions of difficulties when implementing competency-based English teaching curriculum and their proposed solutions. Forum for Linguistic Studies. 5, 2 (Sep. 2023), 1863. DOI:https://doi.org/10.59400/FLS.v5i2.1863.