Perhaps you should try some spelling variations:
nhanh dan » nhan dan, thanh dan, nhanh ngan
dung cong » dung trong
cong dang » cong dong, cong dan, cong dung
doc hieu » hoc thieu, hoc hien
dan dung » van dung, tin dung, ap dung
dang van » hoang van, hang va
van dan » van ban, ban dan, van dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) tinh - nhanh dan dung cong dang van dan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) tinh - nhanh dan dung cong dang van dan ca".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) tinh - nhanh dan dung cong dang van dan ca*.