Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chieu sang, hieu cach
chieu xanh » chieu sang, chieu tinh, hieu manh
trong manh » trong minh, trong anh, trong mach
trung va » truong va, trang va, trung ha
manh van » anh van, menh van, canh van
va dung » van dung, va duong, vat dung

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) OR (chieu xanh))) or (chiet tach)) - thanh trung va dung trong manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sach) OR (chieu xanh))) OR (chiet tach)) - thanh trung va dung trong manh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((chieu sach) OR (chieu xanh))) or (chiet tach)) - thanh trung va dung trong manh van ban".
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sach) OR (chieu xanh))) or (chiet tach)) - thanh trung va dung trong manh van ban*.