Perhaps you should try some spelling variations:
professional communication » personal communication, professional organization, professional education
die professional » time professional, d professional, die profession
technologies 2 » technologies _, technologies 4
2 informations » 2 information, 4.2 informations, des informations
informations 3 » informations und, informations sur, informations och
a developing » a development
developing a » developing _
costs a » costs _, costs 4
a areal » _ areal, 2 areal, 4 areal
3 die » 2 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 informations 3 die professional communication costs a developing a areal.*.