Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developing areas » developing asia, developing east, developing a
information b » information 2, information 1, information bank
4 developing » 3 developing
areas areas » areas arenas, seas areas, areas access
costs 4 » costs _, costs a, costs 4.2
die de » die die, die der, die den
b die » 2 die, 3 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologien _ information b die de communication costs 4 developing areas areas.*.