Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
tranh van » tran van, trinh van, thanh van
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
van dung » van dong, xay dung, tin dung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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 (doc hieu)) sang - canh tranh van dung cong dan than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sang - canh tranh van dung cong dan than ban*".