Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hang khoa » dung khoa
qua trieu » qua tieu, chua trieu, qua trinh
doanh han » doanh nhan, doanh phan, doanh ban
ban hang » ngan hang
luan ket » lien ket
thi kinh » tri kinh, thi minh, thi hinh

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