Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologies 4 » technologies _
4 information » 2 information, 1 information
developing em » developing e, developing eq, developing amp
contents has » contents fase, contents head, contents maps
2 developing » 3 developing, 4 developing, 2 development
em africa » 1 africa
has de » cas de, pas de, las de
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: technologies 4 information contents has de communication cost 2 developing em africa.*.