Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, mot chieu
ban khan » ban than, ban nhan, ban chan
khan cap » khan ap, than cap, khoan cam

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) or (doi chieu)) lang - hanh tranh cua ((nhung cong) OR (dung cong)) ban khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) lang - hanh tranh cua ((nhung cong) OR (dung cong)) ban khan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) lang - hanh tranh cua ((nhung cong) OR (dung cong)) ban khan cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) lang - hanh tranh cua ((nhung cong) OR (dung cong)) ban khan cap*.