Perhaps you should try some spelling variations:
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
15 developing » 1 developing, 5 developing, 10 developing
developing a » developing _
contents a » contents 1, contents _, contents i
a africa » 1 africa, can africa, em africa
cost 15 » cost 12, cost 5, cost 11.5
a de » a die, a der, a des

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

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