Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tam dung » tam duong, tan dung, am dung
tac dung » sach dung, xay dung, tin dung
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: doi chieu sach - thanh trung ((tam dung) OR (tac dung)) cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh trung ((tam dung) OR (tac dung)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung ((tam dung) OR (tac dung)) cong dan toan cau*.