Perhaps you should try some spelling variations:
phan cong » thanh cong
cong dung » cuong dung, cong dong, cong luong
doc hieu » hoc thieu, hoc hien
dung con » dung cong, dung co, dung dong
con danh » cuon danh, cong danh, cuong danh
danh van » doanh van, dang van, dinh van
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 - phan cong dung con danh van dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) tinh - phan cong dung con danh van dan ca.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) tinh - phan cong dung con danh van dan ca*.