Perhaps you should try some spelling variations:
triet tinh » trieu tinh, trien tinh, trien kinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
mon triet » minh triet, bo triet, mao triet
luan hoan » luan van
hoan cong » hoang cong, hoa cong, toan cong
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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: mon triet tinh - canh doanh luan hoan cong ((dan than) OR (van than)) cau~.
• Adding a wildcard symbol may retrieve word variants: mon triet tinh - canh doanh luan hoan cong ((dan than) or (van than)) cau*.