Perhaps you should try some spelling variations:
cang thanh » cong thanh, cang thang, dang thanh
doi chieu » doc hieu, doi chi, mot chieu
cong cang » cong cong, cong lang, cong vang
thanh cha » thanh ha, thanh nha, thanh phan
ho chieu » theo chieu, hoc thieu, mot chieu
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong

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 tranh ((cua tong) OR (cua nong)) cong cang thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) xanh - canh tranh ((cua tong) OR (cua nong)) cong cang thanh cha.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (ho chieu)) xanh - canh tranh ((cua tong) OR (cua nong)) cong cang thanh cha".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) xanh - canh tranh ((cua tong) OR (cua nong)) cong cang thanh cha*.