Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
tac thanh » bac thanh, cac thanh, tcc thanh
ho chieu » theo chieu, hoc thieu, doi chieu

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 trinh luat ((nhung cong) or (hang cong)) tac thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh luat ((nhung cong) OR (hang cong)) tac thanh san*.