Perhaps you should try some spelling variations:
doanh doanh » doanh hoan, doanh thanh, dong doanh
hang khoa » dung khoa
ban hang » ngan hang
luan ket » lien ket
qua kiem » luat kiem, quan niem, quan kien
kiem thu » kieu thu, kien thuc, diem thuc
thu san » thuy san, thu ban, phu san
toan » tran

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 kiem thu san ((doanh doanh) OR (toan doanh)) hien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban hang khoa luan ket qua kiem thu san ((doanh doanh) OR (toan doanh)) hien".
• Adding a wildcard symbol may retrieve word variants: ban hang khoa luan ket qua kiem thu san ((doanh doanh) OR (toan doanh)) hien*.