Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
cach dung » sach dung, cach mang, tac dung
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
dan phan » doan phan, dan chan, dam phan
van phan » van phong, van thanh, luan phan

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 - cach dung cua nhung cong ((dan phan) or (van phan)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - cach dung cua nhung cong ((dan phan) OR (van phan)) dau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - cach dung cua nhung cong ((dan phan) or (van phan)) dau*.