Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
chua dong » cua dong, ha dong, hoa dong
huy dong » ha dong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap

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 sang - canh tranh ((chua dong) or (huy dong)) cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - canh tranh ((chua dong) OR (huy dong)) cong tan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - canh tranh ((chua dong) or (huy dong)) cong tan than cau*.