Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, mot chieu
tranh va » tranh van, trang va, trinh va
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan thu » toan thuc, van thu
va dang » van dang, va nang, va lang

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 va dang cong san tuan thu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (ho chieu)) xanh - canh tranh va dang cong san tuan thu".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (ho chieu)) xanh - canh tranh va dang cong san tuan thu*.