Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu quang » thieu quang, hieu quan, hieu qua
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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 (hieu quang)) - canh tranh cua nhung ((cong dan) OR (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu quang)) - canh tranh cua nhung ((cong dan) OR (cong san)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hieu quang)) - canh tranh cua nhung ((cong dan) OR (cong san)) phan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu quang)) - canh tranh cua nhung ((cong dan) OR (cong san)) phan cau*.