Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh vat, trinh ve
va thong » va thuong, va phuong, he thong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban
toan tap » toan ban

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 va thong ((cong dan) or (cong san)) ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh va thong ((cong dan) OR (cong san)) ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh va thong ((cong dan) or (cong san)) ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh va thong ((cong dan) or (cong san)) ((toan cao) OR (toan tap))*.