Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, ho chieu
ban quan » van quan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan 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 ((ban cua) OR (ban quan)) thong cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh ((ban cua) OR (ban quan)) thong cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh ((ban cua) OR (ban quan)) thong cong tac toan tap*.