Perhaps you should try some spelling variations:
hoc chinh » hoan chinh, hoc sinh, hoc kinh
trung vap » trung cap, trung va, trung lap
trung van » truong van, trong van, trung va
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 ((trung vap) or (trung van)) hang cong tac ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - thanh ((trung vap) OR (trung van)) hang cong tac ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chinh sach - thanh ((trung vap) or (trung van)) hang cong tac ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - thanh ((trung vap) or (trung van)) hang cong tac ((than cau) OR (phan cau))*.