Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
nhung don » nhung van, nhung bo
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van, hang va
than cau » toan cau, phan cau, than cap
khan ap » khan cap, han ap, khan dam

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 trang va ((nhung don) or (hang cong)) tan ((than cau) or (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trang va ((nhung don) OR (hang cong)) tan ((than cau) OR (khan ap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trang va ((nhung don) or (hang cong)) tan ((than cau) or (khan ap))*.