Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
et communication » et communicatione, get communication, debt communication
7.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
developing a » developing _
contents 12 » contents 1, contents 19, contents 12.1
cost 7.4 » costs 7.4, cost 2.4, cost 3.4
a africa » 1 africa, can africa, em africa
12 et » 12 e, 13 et

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information contents 12 et communication cost 7.4 developing a africa.*.