Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung don » nhung van, nhung bo
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » tran van
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: ho chieu sach - hanh ((trang va) or (hang va)) ((nhung don) or (dung cong)) tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trang va) OR (hang va)) ((nhung don) OR (dung cong)) tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trang va) or (hang va)) ((nhung don) or (dung cong)) tac toan tap*.