Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
dung danh » dung doanh, dung dan, cuong danh
phan dap » phan dau, phan lap, phan tap
danh van » doanh van, dang van, dinh van
van chat » cao chat
van van » van ban, tan van, san van
ung » cung
dung » dcung

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 (toc thieu)) tinh - phan dap ung dung danh van van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) tinh - phan dap ung dung danh van van chat.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) tinh - phan dap ung dung danh van van chat*.