Perhaps you should try some spelling variations:
technologien series » technologies series, technology series, technologies varies
information context » information content, information contents, information centers
series information » business information
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
15 developing » 1 developing, 5 developing, 10 developing
developing a » developing _
a africa » 1 africa, can africa, em africa
cost 15 » cost 12, cost 5, cost 11.5
3 de » 3 die, 3 der, 3 des

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

• Adding a wildcard symbol may retrieve word variants: technologien series information context 3 de communication cost 15 developing a africa.*.