Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hieu sach » chieu sach, hieu cach, hieu cac
dien sach » dien anh
trung cua » truong cua, trung tuan, trung cap
tan than » tan thanh, tan tran, ban 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) OR (thong cong)) tan 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) OR (thong cong)) tan 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) OR (thong cong)) tan than cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sach) or (dien sach)) - manh trung cua ((nhung cong) OR (thong cong)) tan than cao*.