Perhaps you should try some spelling variations:
information centre » information centers, information contents
oral communication » personal communication
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
3.3 developing » 4 developing, 2 developing, 1 developing
centre lived » century lived, centre leben, centre mitec
lived oral » derived oral
costs 3.3 » costs 2.3, costs 3.5, costs 4.3

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information centre lived oral communication costs 3.3 developing _ african.*.