Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
van hanh » van thanh, ban hanh, van anh
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cau » toan cau, phan cau, than cap
hanh va » hang va, hanh vi
va dung » van dung, va duong, vat dung

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 - van hanh va dung ((cong ban) OR (cong san)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - van hanh va dung ((cong ban) OR (cong san)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - van hanh va dung ((cong ban) OR (cong san)) than cau*.