Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologie d » technologie 3d, technologie de, technologie c
d information » nd information, od information, und information
contents 3.1 » contents 1, contents _, contents map
3.1 de » 3.1 die, 3.1 der, 3.1 def
cost 2 » cost 12, cost _, cost 4

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

• Adding a wildcard symbol may retrieve word variants: technologie d information contents 3.1 de communication cost 2 development 1 africa.*.