Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information 12.2.1 » information 12.2.2, information 12.2.4, information 13.2.1
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
eine personal » refine personal, eine person, life personal
4 developing » 3 developing
12.2.1 eine » 12.3.1 eine, 2.2.1 eine, 2.2.1 ein
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 ad information 12.2.1 eine personal communication costs 4 developing _ areas.*.