Perhaps you should try some spelling variations:
chua thiet » chuan thiet, cua thiet, thua thiet
doanh hoan » doanh doanh, doanh khoa, doanh nhan
hoan chat » hoa chat, hoat chat, chuan chat
luan ket » lien ket
ket chua » ket qua, ket cau, ket hoa
thiet bi » thiet ke
bi kinh » bai kinh, bi tinh, li 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) or (ngan hang)) khoa luan ket chua thiet bi kinh doanh hoan chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ban hang) OR (ngan hang)) khoa luan ket chua thiet bi kinh doanh hoan chat*.