Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dong cong » dung cong, dang cong, cong cong
khi sach » khi sac, khoa sach, khau sach
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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