Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
nhan dang » nhan dan, phan dang, tran dang
dang luan » dung luan, tang luan, hang luan
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
quan van » luan van, quan va, quan luan

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 - nhan dang luan ((nhung cong) or (hang cong)) tac quan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - nhan dang luan ((nhung cong) OR (hang cong)) tac quan van.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - nhan dang luan ((nhung cong) or (hang cong)) tac quan van*.