Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
thien anh » thien danh, tien anh, thien thanh
trung hoa » trung hoc, trung ha
cong cong » cong dong, trong cong, dung cong
hoa cong » cua cong, va cong, hoa co
cong tac » cong ty
tac cong » tac chong, cac cong, tac dong
cong dan » cong san, cong tan, huong dan

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

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