Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
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 - ((thanh trung) or (thanh tung)) cua ((nhung cong) or (hang cong)) dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh trung) OR (thanh tung)) cua ((nhung cong) OR (hang cong)) dan phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh trung) or (thanh tung)) cua ((nhung cong) or (hang cong)) dan phan dau*.