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