Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh van » tran van, thanh van, tranh ban
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
toan cao » toan tap
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: doi chieu sach - canh ((tranh van) OR (trinh van)) hang cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh ((tranh van) OR (trinh van)) hang cong tac ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh ((tranh van) OR (trinh van)) hang cong tac ((toan cao) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh ((tranh van) OR (trinh van)) hang cong tac ((toan cao) or (toan ban))*.