Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
user information » der information, other information, user innovation
information fund » information und, informations und, information befunde
techniques user » techniques used, techniques laser, techniques us
4 developing » 3 developing
developing 4 » developing _, developing a, developing e
der mobile » der mobilen, der mobil, does mobile
fund der » und der, bund der, befund der
costs 4 » costs _, costs a, costs 4.2
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: techniques user information fund der mobile communications costs 4 developing 4 areas.*.