Perhaps you should try some spelling variations:
cua chuong » cua chung, cua huong, cua thuong
cua phuong » cuu phuong, cuc phuong, luan phuong
hanh dong » anh dong, ha dong
van thang » van thanh, van khang, van hang
theo cau » theo chu, theo cap, theo dau
cau sach » cao sach, hau sach, rau sach
dan toan » van toan, dan than, manh toan

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

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