Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
developing a » developing _
centers des » centre des, centers case, centers help
cost 3.2 » cost 2.4
a areas » 1 areas, 2 areas, 4 areas
des de » des dem, des der, des des

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

• Adding a wildcard symbol may retrieve word variants: technologien _ information centers des de communication cost 3.2 developing a areas.*.