Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van 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: theo chieu sang - thanh tuong ((cua tong) or (cua nong)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh tuong ((cua tong) OR (cua nong)) cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh tuong ((cua tong) or (cua nong)) cong dan than cau*.