Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
11.3 developing » 1.3 developing, 10.3 developing, 11.5 developing
technologie 3d » technologies 3d, technologie 3, technologie und
3d information » d information, nd information, od information
developing a » developing _
cost 11.3 » cost 11.5, cost 4.1.3, costs 11.1
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologie 3d information contents _ de communication cost 11.3 developing a africa.*.