Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
doanh than » doanh nhan, doanh phan, doanh tai
hang khoa » dung khoa
qua trieu » qua tieu, chua trieu, qua trinh
ban hang » ngan hang
luan ket » lien ket
thi minh » chi minh, thi hanh, thi bich

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