Perhaps you should try some spelling variations:
hoc chinh » hoan chinh, hoc sinh, hoc kinh
hanh tram » hanh tam, hanh trang, thanh tran
van trong » van truong, vang trong, ban trong
ban tuong » ban huong, ban trong, va tuong
cong san » cong tac
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - hanh tram ((van trong) or (ban tuong)) cong san ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh tram ((van trong) OR (ban tuong)) cong san ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - hanh tram ((van trong) or (ban tuong)) cong san ((phan cau) or (phan dau))*.