Perhaps you should try some spelling variations:
trinh hieu » trinh dieu, trinh thiet, trinh nhiet
thuoc hien » thuoc phien, thuc hien, phuoc hien
nha thuoc » nha nuoc, nhan thuc, nha hoc
hien nhan » hien nhanh, thien nhan, dien nhan
kinh cua » sinh cua, tinh cua, dinh cua
viet nha » viet nhat, viet ha, viec nha
qua » quan

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 kinh cua nguoi viet nha thuoc hien nhan~.
• Adding a wildcard symbol may retrieve word variants: giao trinh hieu qua kinh cua nguoi viet nha thuoc hien nhan*.