Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh thanh, dong doanh
canh doanh » hanh doanh, chinh doanh, kinh doanh
doanh hoan » doanh khoa, doanh nhan, doanh luan
hien ngan » hiem ngan, vien nganh, hien nhanh
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 ngan - ((canh doanh) or (((doanh doanh) OR (doanh hoan)))) luan van cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien ngan - ((canh doanh) OR (((doanh doanh) OR (doanh hoan)))) luan van cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien ngan - ((canh doanh) or (((doanh doanh) OR (doanh hoan)))) luan van cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc hien ngan - ((canh doanh) or (((doanh doanh) OR (doanh hoan)))) luan van cong dan toan ban*.