Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
hieu sach » chieu sach, hieu cach, hieu cac
dien sach » dien anh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
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 thanh than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (dien sach)) - manh trung cua nhung cong thanh than cao.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) or (dien sach)) - manh trung cua nhung cong thanh than cao*.