Perhaps you should try some spelling variations:
trien nhan » trien nha, tri nhan, trien khai
trinh hieu » trinh dieu, trinh thiet, trinh nhiet
hoc trien » hoc tren, hoc tien, hoc truyen
qua tinh » qua trinh, quan tinh, qua kinh
tinh cua » trinh cua, sinh cua, tinh chat
viet va » viet van, viet ha, tiet va
va hoc » van hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh hieu qua tinh cua nguoi viet va hoc trien nhan~.
• Adding a wildcard symbol may retrieve word variants: giao trinh hieu qua tinh cua nguoi viet va hoc trien nhan*.