Perhaps you should try some spelling variations:
cong thang » cong thanh, cang thang, cong thong
chieu sach » chiet tach, chieu sang, chieu xanh
dung cong » dung trong
tranh ha » thanh ha, trang ha, trinh ha
ha dung » hai dung, kha dung, nha dung
ban dan » ban hang, ban hanh, ban quan
van dau » van dao, phan dau

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