Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
de communication » mobile communication, online communication
4 developing » 3 developing
developing a » developing _
content 3.1 » contents 3.1, context 3.1, content 3.2
a africa » 1 africa, can africa, em africa
3.1 de » 3.1 die, 3.1 der, 3.1 def
cost 4 » cost _, cost 2.4

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information content 3.1 de communication cost 4 developing a africa.*.