Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung ha » trung hoc, trung tam, trung cap
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien anh) or (hieu manh)) - thanh trung ha ((nhung cong) or (thong cong)) tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hieu manh)) - thanh trung ha ((nhung cong) OR (thong cong)) tac than cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hieu manh)) - thanh trung ha ((nhung cong) or (thong cong)) tac than cap*.