Perhaps you should try some spelling variations:
information centers » information contents, information officers
oral communication » personal communication
technologien dis » technologien des, technologien als, technologien im
dis information » mis information, aids information, des informations
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
developing a » developing _
centers de » centers _, centres de, centers 10
costs 1.3 » costs 12.3, costs 14.3, costs 15.3
a africa » 1 africa, can africa, em africa
de oral » de otras, new oral

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information centers de oral communication costs 1.3 developing a africa.*.