Perhaps you should try some spelling variations:
person communication » personal communication, personal communications, irsn communication
technologien aids » technologien als, technologien ad, technologien des
information 1.5.2 » information 1.2, information 2
aids information » chandos information, series information
e developing » 3 developing, 4 developing, 2 developing
der person » per person, der personen, older persons
1.5.2 der » 3.5.2 der, 5.5.2 der, 1.5.4 der
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 1.5.2 der person communication costs e developing _ areas.*.