Perhaps you should try some spelling variations:
chong cong » cong cong, thong cong, cuong cong
chieu sach » chinh sach, chiet tach, chieu sang
hieu sach » hieu cach, dien sach, hieu cac
tranh cua » doanh cua, manh cua
cua chong » cua cong, cua chung, cua khong
dan chinh » dang chinh, lan chinh, van chinh
cong dan » cong san, cong tan, huong dan
chinh ca » chinh ta, chinh va, chinh tai

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 (chieu sach)) - canh tranh cua chong cong dan chinh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (chieu sach)) - canh tranh cua chong cong dan chinh ca*.