Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong hach » trong mach, trong cach, trong hanh
doi chieu » doc hieu, doi chi, ho chieu
hach toan » thanh toan, manh toan
hong cua » huong cua, thong cua, dong cua
cong cua » cong cu, dong cua, huong cua
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((hong cua) OR (cong cua)) dung trong hach toan tap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((hong cua) OR (cong cua)) dung trong hach toan tap*.