Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
luan phan » luan van, luan hoan
tranh va » tranh van, trang va, trinh va
dan chan » dan gian, dan ca, van chat
van phan » van phong, van thanh, van ban
va dung » van dung, va duong, vat dung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh va dung cong ((dan chan) OR (((van phan) OR (luan phan)))) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh va dung cong ((dan chan) or (((van phan) OR (luan phan)))) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh va dung cong ((dan chan) or (((van phan) OR (luan phan)))) cau*.