Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
dai dang » da dang, dai nang, hai dang
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau

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 (chiet tach)) - thanh truong dai dang ((cong tan) OR (cong tac)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chiet tach)) - thanh truong dai dang ((cong tan) OR (cong tac)) chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chiet tach)) - thanh truong dai dang ((cong tan) OR (cong tac)) chan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chiet tach)) - thanh truong dai dang ((cong tan) OR (cong tac)) chan cau*.