Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cau sach » hau sach, rau sach, khau sach
cao sach » co sach, ao sach, lao sach
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((cau sach) or (cao sach)) - hanh trinh va nang ((cong dan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((cau sach) OR (cao sach)) - hanh trinh va nang ((cong dan) OR (cong san)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((cau sach) or (cao sach)) - hanh trinh va nang ((cong dan) OR (cong san)) toan ban*".