Perhaps you should try some spelling variations:
hiem ngan » kim ngan, viem gan
hoc hiem » hoc hien, hoc thieu, hoc thiet
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hiem ngan - thanh ((trung va) OR (trang va)) hang ((cong dan) OR (cong san)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - thanh ((trung va) OR (trang va)) hang ((cong dan) or (cong san)) than cao~".
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - thanh ((trung va) OR (trang va)) hang ((cong dan) or (cong san)) than cao*.