Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
thanh tieng » hanh tieng, thanh tien, thanh tung
hang khoa » dung khoa
ban hang » ngan hang
luan ket » lien ket
qua tieu » luan tieu
tieu qua » hieu qua, lieu quan, hieu quan

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 qua tieu qua (kinh or minh) doanh thanh tieng~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ban hang khoa luan ket qua tieu qua (kinh OR minh) doanh thanh tieng.
• Adding a wildcard symbol may retrieve word variants: ban hang khoa luan ket qua tieu qua (kinh or minh) doanh thanh tieng*.