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

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 dai ung dung danh van van chat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (toc thieu)) tinh - phan dai ung dung danh van van chat".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (toc thieu)) tinh - phan dai ung dung danh van van chat*.