Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
hieu sach » chieu sach, hieu cach, hieu cac
dien sach » dien anh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) OR (dien sach)) - manh trung cua nhung cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu sach) OR (dien sach)) - manh trung cua nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) OR (dien sach)) - manh trung cua nhung cong dan than cao*.