Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
cua rung » cua trung, cua rang, cua truong
dung dan » dung dat, dung san, tung dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh tranh ((cua rung) or (cua nhung)) dung dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh ((cua rung) OR (cua nhung)) dung dan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh ((cua rung) or (cua nhung)) dung dan phan dau*.