Perhaps you should try some spelling variations:
trung thanh » truong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trung tuan » trung tam, tran tuan, truong thanh
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
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 ((trung tuan) OR (trung thanh)) tong cong tan ((than cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh ((trung tuan) OR (trung thanh)) tong cong tan ((than cau) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - thanh ((trung tuan) OR (trung thanh)) tong cong tan ((than cau) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh ((trung tuan) OR (trung thanh)) tong cong tan ((than cau) or (phan tu))*.