Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hanh trung » thanh trung, hanh trang, danh trung
dien sach » dien anh
cong cong » cong dong, trong cong, dung cong
doc dien » duoc dien, doi dien, do dien
cong dan » cong san, cong tan, huong dan
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: doc dien sach - ((hanh trung) or (manh trung)) cua cong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc dien sach - ((hanh trung) OR (manh trung)) cua cong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: doc dien sach - ((hanh trung) or (manh trung)) cua cong cong dan van ban*.