Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
doanh anh » doanh doanh, doanh sang, doanh tinh
hang khoa » dung khoa
ban hang » ngan hang
luan ket » lien ket
qua tieu » luan tieu
tieu su » thieu so
su kinh » qua kinh

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