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
tuong cua » truong cua, huong cua, thong cua
cua thong » cua thuong, cua khong, cua tong
cong tac » cong ty
phan cau » phan dau, phan cac, phan lap

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 thong ((cong san) or (cong tac)) ((phan cau) OR (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh tuong cua thong ((cong san) OR (cong tac)) ((phan cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - thanh tuong cua thong ((cong san) or (cong tac)) ((phan cau) OR (phan tu))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh tuong cua thong ((cong san) or (cong tac)) ((phan cau) OR (phan tu))*.