Perhaps you should try some spelling variations:
phuc khong » thuc khong, thuoc khong, chu khong
chieu sach » chinh sach, chiet tach, chieu sang
cua khong » hua khong, cua phuong, cua thuong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 - canh tranh ((cua khong) or (phuc khong)) cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh tranh ((cua khong) OR (phuc khong)) cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh ((cua khong) or (phuc khong)) cong dan than cau*.