Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
tuong dong » tuong duong, trong dong, cuong duong
trung cap » truong cao, trung tam
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu xanh) OR (chieu sach)) - manh trung cap ((thuong cong) or (tuong dong)) van tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu xanh) OR (chieu sach)) - manh trung cap ((thuong cong) OR (tuong dong)) van tan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu xanh) OR (chieu sach)) - manh trung cap ((thuong cong) or (tuong dong)) van tan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu xanh) OR (chieu sach)) - manh trung cap ((thuong cong) or (tuong dong)) van tan cau*.