Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
kien sach » dien sach, vien bach, kien mac
huong cua » dung cua
tang cua » mang cua, hang cua, tang luan
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: hoc ((chieu sach) or (kien sach)) - hanh ((tang cua) or (huong cua)) nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (kien sach)) - hanh ((tang cua) OR (huong cua)) nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (kien sach)) - hanh ((tang cua) or (huong cua)) nhung cong tac toan tap*.