Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
trung ha » trung hoc, trung tam, trung cap
ha nhung » hoa nhung, hay nhung, pha nhung
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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 hien) OR (toc thieu)) xanh - thanh trung ha nhung cong dan ((than cao) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hien) or (toc thieu)) xanh - thanh trung ha nhung cong dan ((than cao) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (toc thieu)) xanh - thanh trung ha nhung cong dan ((than cao) OR (than cap))*.