Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, manh trung, danh trung
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong ban » cong bang, cong san, cong tan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trung) OR (hanh trang)) cua nhung cong ban ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh trung) or (hanh trang)) cua nhung cong ban ((toan ban) OR (van ban))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trung) or (hanh trang)) cua nhung cong ban ((toan ban) OR (van ban))*.