Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang cong » dung cong
khi sach » khi sac, khoa sach, khau sach
cua dang » cua cong, cua ban
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khi sach - hanh tranh cua dang cong ((dan than) OR (ban than)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi khi sach - hanh tranh cua dang cong ((dan than) OR (ban than)) cap".
• Adding a wildcard symbol may retrieve word variants: doi khi sach - hanh tranh cua dang cong ((dan than) OR (ban than)) cap*.