Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information costs » information contents, information centers, information content
technologien ids » technologien des, technologien als, technologien im
de communication » mobile communication, online communication
ids information » aids information, dis information, mis information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
costs des » costs fees
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 ids information costs des de communication cost 2.4 developing _ areal.*.