Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doi chi, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
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 chieu) OR (doc hieu)) sang - hanh tranh cua ((dang cong) or (dung cong)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sang - hanh tranh cua ((dang cong) OR (dung cong)) dan than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sang - hanh tranh cua ((dang cong) or (dung cong)) dan than cap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sang - hanh tranh cua ((dang cong) or (dung cong)) dan than cap*.