Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
information centre » information centers, information contents
technologien ad » technologien am, technologien und, technologien als
12.3 developing » 1.3 developing, 12.4 developing, 2.3 developing
ad information » d information, nd information, od information
centre des » centre de, centrale des, centres de
des verbal » des verbalen, des verbs, models verbal
costs 12.3 » costs 2.3, costs 12.4, costs 14.3

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information centre des verbal communication costs 12.3 developing _ africa.*.