Perhaps you should try some spelling variations:
minh doanh » kinh doanh, minh danh, minh doan
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hang khoa » dung khoa
ban hang » ngan hang
ket luan » ket qua, te luan, ket doan
dat luan » dan luan, dau luan, dat quang
tieu thu » tieu su
thien » thieu, tien, hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ban hang khoa luan ((ket luan) OR (dat luan)) ((tieu thu) or (trieu thi)) minh doanh hoan thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ban hang khoa luan ((ket luan) OR (dat luan)) ((tieu thu) OR (trieu thi)) minh doanh hoan thien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban hang khoa luan ((ket luan) OR (dat luan)) ((tieu thu) or (trieu thi)) minh doanh hoan thien".
• Adding a wildcard symbol may retrieve word variants: ban hang khoa luan ((ket luan) OR (dat luan)) ((tieu thu) or (trieu thi)) minh doanh hoan thien*.