Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
vang toan » van toan, dang toan, quang toan
dung toan » dung doanh, dung thang, dung thanh
ho chieu » theo chieu, hoc thieu, doi chieu

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 - canh tranh cua nhung cong ((vang toan) or (dung toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh tranh cua nhung cong ((vang toan) OR (dung toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh cua nhung cong ((vang toan) or (dung toan)) cau*.