Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh than » hanh han, hanh phan, nhanh thanh
hanh nhan » thanh nhan, danh nhan, anh nhan
cua thong » cua thuong, cua khong, suat thong
ho chieu » theo chieu, hoc thieu, doi chieu
cua tong » cua cong, cua dong, cua nong
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh than) OR (hanh nhan)) ((cua thong) OR (cua tong)) cong tac toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh than) or (hanh nhan)) ((cua thong) OR (cua tong)) cong tac toan ban~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh than) or (hanh nhan)) ((cua thong) OR (cua tong)) cong tac toan ban*.