Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
hang khoa » dung khoa
ban hang » ngan hang
luan ket » lien ket
qua tieu » luan tieu
thu kinh » thu minh, thuat kinh, su kinh
nha kinh » than kinh, nhan sinh, qua kinh
thieu » hieu

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