Perhaps you should try some spelling variations:
luan trien » luan thiet, luan tieu, quan tren
trien khai » trien nha
sinh doanh » sinh danh, minh doanh, chinh doanh
hang khoa » dung khoa
ban hang » ngan hang
luan dat » luat dat, luan dac, luan day
dat luan » dan luan, dau luan, dat quang
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: ban hang khoa luan dat luan trien khai ((sinh doanh) OR (kinh doanh)) kho khan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ban hang khoa luan dat luan trien khai ((sinh doanh) OR (kinh doanh)) kho khan".
• Adding a wildcard symbol may retrieve word variants: ban hang khoa luan dat luan trien khai ((sinh doanh) OR (kinh doanh)) kho khan*.