Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung don » nhung van, nhung bo
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tung cap » trung cap, cung cap, thong cap
dan toan » van toan, dan than, manh toan

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 - thanh tung cap ((nhung don) or (dung cong)) ((dan toan) or (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung cap ((nhung don) OR (dung cong)) ((dan toan) OR (anh tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung cap ((nhung don) or (dung cong)) ((dan toan) or (anh tuan)) cau*.