Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong van » trong cac
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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 ((hang va) or (trong van)) dong cong tan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((hang va) OR (trong van)) dong cong tan than ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((hang va) or (trong van)) dong cong tan than ban*.