Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
canh doanh » chinh doanh, doanh doanh, kinh doanh
luan nang » luan van, van nang, luan san
nang cong » nang song, dang cong, bang cong
chi hanh » chi nhanh, chi thanh, thi hanh
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi hanh - ((canh doanh) or (hanh doanh)) luan nang cong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi hanh - ((canh doanh) OR (hanh doanh)) luan nang cong ban than cau.
• Adding a wildcard symbol may retrieve word variants: doi chi hanh - ((canh doanh) or (hanh doanh)) luan nang cong ban than cau*.