Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
dan toan » van toan, dan than, manh toan
toan tap » toan ban

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 - hanh tranh va ((nhung cong) or (((hang cong) or (bang cong)))) dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tranh va ((nhung cong) OR (((hang cong) OR (bang cong)))) dan toan tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tranh va ((nhung cong) or (((hang cong) or (bang cong)))) dan toan tap*.