Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
4.5 developing » 1.5 developing, 4.1 developing, 5.5 developing
contents l » contents 1, contents _, contents i
l personal » a personal, 1 personal, 4 personal
costs 4.5 » costs 4.2, costs 4.4, costs 3.5

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information contents l personal communication costs 4.5 developing _ africa.*.