Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
oral communication » personal communication
technologien nd » technologien und, technologien ad, technologie und
nd information » und information, d information, od information
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
content 2 » content _, content 1, content 3
2 oral » _ oral, 4 oral

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

• Adding a wildcard symbol may retrieve word variants: technologien nd information content 2 oral communication costs 4.2 developing _ africa.*.