Perhaps you should try some spelling variations:
nhan hang » ngan hang, nhan dang, nha hang
hang khoa » dung khoa
luan tieu » luan thiet
doanh kho » doanh khoa, doanh cho, doanh nho
luan ket » lien ket
thi kinh » tri kinh, thi minh, thi hinh
kho khan » khoa kham, khoa than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: nhan hang khoa luan ket ((qua tieu) OR (luan tieu)) thi kinh doanh kho khan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nhan hang khoa luan ket ((qua tieu) OR (luan tieu)) thi kinh doanh kho khan".
• Adding a wildcard symbol may retrieve word variants: nhan hang khoa luan ket ((qua tieu) OR (luan tieu)) thi kinh doanh kho khan*.