Perhaps you should try some spelling variations:
doanh thua » doanh thu, doanh thuc, doanh khoa
thua thien » thuc hien
hang khoa » dung khoa
luan hieu » luan tieu, luan dieu, luan thiet
ban hang » ngan hang
luan ket » lien ket
ket luan » ket qua, te luan, dat luan
qua » quan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ban hang khoa luan ket luan hieu qua (kinh OR dinh) doanh thua thien~".
• Adding a wildcard symbol may retrieve word variants: ban hang khoa luan ket luan hieu qua (kinh OR dinh) doanh thua thien*.