Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
informations 2.5.2 » information 1.5.2, information 2.5.3, information 2.5.4
technologien des » technologien fur, technologien und, technologies 2
des informations » aids information
developing farms » developing forms, developing forest, developing areas
a developing » a development
farms across » firms across, reforms across, flows across
a mobile » _ mobile
2.5.2 a » 2.5.2 _
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien des informations 2.5.2 a mobile communications costs a developing farms across.*.