Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
bien tinh » bi tinh, yen tinh, diep tinh
tuong cua » truong cua, huong cua, thong cua
bang cong » dang cong, bang song, hang cong
dung cua » dung luan, dung cho
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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) or (bien tinh)) - thanh ((dung cua) or (tuong cua)) bang cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (bien tinh)) - thanh ((dung cua) OR (tuong cua)) bang cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (bien tinh)) - thanh ((dung cua) or (tuong cua)) bang cong tac toan ban*.