Perhaps you should try some spelling variations:
information centers » information contents, information officers
technologien aids » technologien als, technologien ad, technologien des
der communication » de communication, under communication, debt communication
aids information » chandos information, series information
derveloping em » developing e, developing eq, developing _
3 derveloping » 3 developing, 4 developing, 2 developing
centers 3 » centers _, centers a, centers 3.3
em africa » 1 africa
costs 3 » costs _, costs 4, costs a
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information centers 3 der communication costs 3 derveloping em africa.*.