VNU JOURNAL OF FOREIGN STUDIES, VOL 37, NO 3 (2021) 135 A CORPUS BASED STUDY ON REPORTING VERBS USED IN TESOL RESEARCH ARTICLES BY NATIVE AND NON NATIVE WRITERS Duong My Tham*1, Tran Phuong Nhi2 1 Ho Chi Minh City University of Economics and Finance (UEF), 141 Dien Bien Phu Street, Ward 15, Binh Thanh District, Ho Chi Minh City, Vietnam 2 Ho Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Ward 25, Binh Thanh District, Ho Chi Minh City, Vietnam Received 18 November 202[.]