Hoang long Affiliation 123   MV_designer@yhoo.com hdlong@hotmail.com m TP Ha Noi, Ha Noi 084 Vietnamese   dragon_vn1703@yhoo.com   http://www.24h.com.vn   Biographical Sketch: Biographical Sketch thong tin chua cap nhat   Primary Research Focus: Primary Research Focus   JEL Areas: A2 : Economics Education and Teaching of Economics: General H0 : Public Economics: General