Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
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: hoc ((chieu tinh) or (chinh sach)) - thanh trung ((va dung) OR (va duong)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chinh sach)) - thanh trung ((va dung) OR (va duong)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu tinh) or (chinh sach)) - thanh trung ((va dung) OR (va duong)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chinh sach)) - thanh trung ((va dung) OR (va duong)) cong dan toan cau*.