Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
doanh luan » doanh nhan
huong cong » luong cong, duong cong, cuong cong
luan anh » luan danh, tuan anh, lan anh
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu tinh)) - doanh luan anh huong cong ((dan toan) OR (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - doanh luan anh huong cong ((dan toan) OR (van toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu tinh)) - doanh luan anh huong cong ((dan toan) OR (van toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu tinh)) - doanh luan anh huong cong ((dan toan) OR (van toan)) cau*.