Perhaps you should try some spelling variations:
triet tinh » trieu tinh, trien tinh, trien kinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
mao triet » tao thiet, va triet, bo triet
luan phan » luan van, luan hoan
luan han » luan hoan, luan van, luan san
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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: mao triet tinh - ((canh doanh) OR (kinh doanh)) ((luan han) OR (luan phan)) cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "mao triet tinh - ((canh doanh) or (kinh doanh)) ((luan han) OR (luan phan)) cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: mao triet tinh - ((canh doanh) or (kinh doanh)) ((luan han) OR (luan phan)) cong dan toan cau*.