Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, mot chieu
cong sat » cong suat, cong hat, cong nhat
cong san » cong tac
nhan dau » phan dau, nhan dan, han dau

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