Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
developing forest » developing forms, development forest, developing coherent
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
4 developing » 3 developing
forest areas » forest fires
3 mobile » _ mobile, a mobile, 2 mobile
costs 4 » costs _, costs a, costs 4.2
3.2 3 » 3.2 3d, 3.2 _, 3.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 3.2 3 mobile communications costs 4 developing forest areas.*.