Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, mot chieu
cua dong » chua dong, cua cong, cua dang
cong tai » cong thai, cong tac, cong tan
dong tai » dung tai, luong tai, cong tac
phan dau » phan tu, hang dau

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)) xanh - canh tranh cua dong ((cong tai) OR (dong tai)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh tranh cua dong ((cong tai) OR (dong tai)) phan dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - canh tranh cua dong ((cong tai) OR (dong tai)) phan dau*".