Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
information center » information centers, information centre, information content
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
developing seas » developing areas, developing east, developing self
4 developing » 3 developing
center a » center _
a verbal » _ verbal, 3 verbal, a herbal
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 des information center a verbal communication costs 4 developing seas areas.*.