Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
va duong » van duong, va tuong, va huong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
va dung » van dung, vat dung, va ung

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 xanh) or (chiet tach)) - hanh tranh ((va dung) OR (va duong)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chiet tach)) - hanh tranh ((va dung) OR (va duong)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chiet tach)) - hanh tranh ((va dung) OR (va duong)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chiet tach)) - hanh tranh ((va dung) OR (va duong)) cong dan toan cau*.