Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
trung vat » trung va, trung van, trong vat
ho chiet » ho chieu, ho thiet, hoc thiet
vat dung » van dung, va dung, viet dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh trung vat dung ((cong dan) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - thanh trung vat dung ((cong dan) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh trung vat dung ((cong dan) OR (cong san)) than cau*.