Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
cong ban » cong bang, cong san, cong tan
va lang » hoa lang
va nang » van nang, da nang, cam nang
phap tu » phan tu, pham tu

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

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