Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
hien tach » thien hach, chiet tach, vien bach
luan phan » luan van
luan hoan » luan van
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tach - canh doanh ((luan phan) or (luan hoan)) cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - canh doanh ((luan phan) OR (luan hoan)) cong van toan ban*.