Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh vin » trinh van, trinh tin, trinh ven
ho chieu » theo chieu, hoc thieu, doi chieu
trinh vi » trinh va, trinh ve, trinh viet
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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 vi) or (trinh vin)) thong ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh vi) OR (trinh vin)) thong ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh vi) or (trinh vin)) thong ((cong dan) or (cong san)) toan cao*.