Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
mat duong » mai duong, xuat duong, hai duong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
va dung » van dung, va duong, vat dung
dan van » dang van, doan van, dao van

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 ((mat duong) OR (va dung)) cong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung ((mat duong) OR (va dung)) cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((mat duong) OR (va dung)) cong dan van ban*.