Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
nhung cong » dung cong, thong cong, nhung don
doi chieu » doc hieu, doi chi, mot chieu
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, mot chieu
van quan » van ban
quan cap » quan cau, quan lap, quang cao

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 (ho chieu)) xanh - canh trinh luan ((nhung cong) or (hang cong)) van quan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - canh trinh luan ((nhung cong) OR (hang cong)) van quan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) xanh - canh trinh luan ((nhung cong) or (hang cong)) van quan cap".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) xanh - canh trinh luan ((nhung cong) or (hang cong)) van quan cap*.