Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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