Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » ho chieu, theo chu, thi chieu
tham nhung » thi nhung
tam nhung » cam nhung, nam nhung, lam nhung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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) OR (theo tieu)) sach - thanh trung ((tam nhung) or (tham nhung)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh trung ((tam nhung) OR (tham nhung)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) sach - thanh trung ((tam nhung) or (tham nhung)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) sach - thanh trung ((tam nhung) or (tham nhung)) cong dan toan cau*.