Thien Nhat Tran Faculty of Economics and Business Administration, Dalat University, Vietnam.   Faculty of Economics and Business Administration Dalat University 01 Phu Dong Thien Vuong str,. Dalat, Lamdong 670000 Vietnam   thienktqt@gmail.com             JEL Areas: H5 : National Government Expenditures and Related Policies National Government Expenditures and Related Policies: General O4 : Economic Growth and Aggregate Productivity: General