Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
dung cong » dung trong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
manh cua » ban cua
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((manh cua) or (doanh cua)) dung cong hach toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((manh cua) OR (doanh cua)) dung cong hach toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((manh cua) or (doanh cua)) dung cong hach toan cao*.