Perhaps you should try some spelling variations:
chiet tach » chieu sach
doi chiet » doi chieu, doi chi, doi viet
cua khong » hua khong, cua phuong, cua thuong
cong cua » cong cu, dong cua, huong cua
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: doi chiet tach - thanh cong cua khong ((cong dan) or (cong san)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - thanh cong cua khong ((cong dan) OR (cong san)) phan cau.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - thanh cong cua khong ((cong dan) or (cong san)) phan cau*.