Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hieu sach » chieu sach, hieu cach, dien sach
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, cong dong
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 - manh trung cua nhung ((cong dan) OR (huong dan)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - manh trung cua nhung ((cong dan) OR (huong dan)) than cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - manh trung cua nhung ((cong dan) OR (huong dan)) than cao*.