Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung vat » trung va, trung van, trong vat
ho chieu » theo chieu, hoc thieu, doi chieu
vat dung » van dung, va dung, viet dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chan cap » khan cap, than cap, cao 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 chieu sach - thanh trung vat dung ((cong dan) OR (cong san)) chan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung vat dung ((cong dan) OR (cong san)) chan cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung vat dung ((cong dan) OR (cong san)) chan cap*.