Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
chinh ca » chinh ta, chinh tai, chinh cho
chinh va » chinh ta, chinh tai, hanh va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chiet tach)) - canh tranh cua nhung cong tac ((chinh ca) OR (chinh va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chiet tach)) - canh tranh cua nhung cong tac ((chinh ca) OR (chinh va)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chiet tach)) - canh tranh cua nhung cong tac ((chinh ca) OR (chinh va))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chiet tach)) - canh tranh cua nhung cong tac ((chinh ca) OR (chinh va))*.