Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
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: ho chieu sang - thanh trung cua thong ((((cong dan) OR (cong tan))) or (cong tac)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - thanh trung cua thong ((((cong dan) OR (cong tan))) OR (cong tac)) than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - thanh trung cua thong ((((cong dan) OR (cong tan))) or (cong tac)) than cau*".