Perhaps you should try some spelling variations:
dong phuong » duong phuong, dung phuong, dong thuong
chieu sach » chinh sach, chiet tach, chieu sang
dong huong » dong thuong, dong duong, cong huong
hanh dung » thanh dung, anh dung, hanh dong
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 - hanh dung cua ((dong phuong) or (dong huong)) ((dan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh dung cua ((dong phuong) OR (dong huong)) ((dan toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh dung cua ((dong phuong) or (dong huong)) ((dan toan) or (van tuan)) cau*.