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
1.5 developing » 1.3 developing, 15 developing, 1.4 developing
contents l » contents 1, contents _, contents i
l personal » a personal, 1 personal, 4 personal
costs 1.5 » costs 3.5, costs 2.5, costs 4.5

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 1.5 developing _ africa.*.