Perhaps you should try some spelling variations:
hieu sach » chieu sach, hieu cach, dien sach
tranh cua » doanh cua, manh cua
dang cong » dung cong
cong doan » cong dan, cong hoan, dong doanh
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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