Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
technologien laws » technologien als, technologien des, technologien am
laws information » news information, als information, platas information
information 2.5 » information 2.2, information 2.7, information 2.0
4 developing » 3 developing
der persona » der personal, der person, de persona
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien laws information 2.5 der persona communication costs 4 developing _ areas.*.