Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ve » trinh he, trinh va, trinh vi
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van 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 vat) or (trinh ve)) thong ((cong tan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh vat) OR (trinh ve)) thong ((cong tan) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh vat) or (trinh ve)) thong ((cong tan) or (cong san)) toan ban*.