Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologie road » technology road, technologie und, technologie 3d
de communication » mobile communication, online communication
11.3 developing » 1.3 developing, 10.3 developing, 11.5 developing
contents 3.1 » contents 1, contents _, contents map
developing a » developing _
cost 11.3 » cost 11.5, cost 4.1.3, costs 11.1
a africa » 1 africa, can africa, em africa
3.1 de » 3.1 die, 3.1 der, 3.1 def

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

• Adding a wildcard symbol may retrieve word variants: technologie road information contents 3.1 de communication cost 11.3 developing a africa.*.