Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu sach » chieu sach, hieu cach, dien sach
tranh cua » doanh cua, manh cua
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
ban thanh » ban hanh, ban hang
doc hieu » toc thieu, hoc thieu, hoc hien

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 - canh tranh cua nhung cong ((manh toan) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - canh tranh cua nhung cong ((manh toan) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - canh tranh cua nhung cong ((manh toan) or (ban thanh)) cau*.