Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
van hang » van khang, van hoang, van thang
cong san » cong tac
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu
va hang » va nang, va lang, va hanh

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 - thanh tung ((va hang) or (van hang)) cong san ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - thanh tung ((va hang) OR (van hang)) cong san ((than cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh tung ((va hang) or (van hang)) cong san ((than cau) or (phan cau))*.