Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologies 2.1 » technologies _, technologies 4, technologies a
et communication » et communicatione, get communication, debt communication
2.1 information » 3.1 information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
contents 3.3 » contents 3.1, content 3.3, contexts 3.3
developing a » developing _
a africa » 1 africa, can africa, em africa
3.3 et » 3.3 el, 3.3 eu, 3.3 en

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents 3.3 et communication cost 2.4 developing a africa.*.