Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
12 developing » 1.2 developing, 2 developing, 1 developing
developing em » developing e, developing eq, developing amp
content 3.1 » contents 3.1, context 3.1, content 3.2
em africa » 1 africa
cost 12 » cost 1.2, cost 15, cost 3.2
3.1 de » 3.1 die, 3.1 der, 3.1 def

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information content 3.1 de communication cost 12 developing em africa.*.