Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
doi chieu » doc hieu, doi chi, ho chieu
chua cong » cua cong, chuc cong, chup cong
chua dong » cua dong, ha dong, huy dong
dan thanh » dang thanh, danh thanh, ban thanh
thanh lap » thanh san, phan lap, thanh hai
cong dan » cong san, cong tan, huong dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chieu)) xanh - canh tranh ((chua cong) or (chua dong)) cong dan thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) xanh - canh tranh ((chua cong) OR (chua dong)) cong dan thanh lap.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - canh tranh ((chua cong) or (chua dong)) cong dan thanh lap*.