Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
el communications » cell communications, sepl communications, 10 communications
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
4.2 developing » 2.2 developing, 3.2 developing, 4.1 developing
developing a » developing _
a africa » 1 africa, can africa, em africa
1 el » _ el, y el, 1 e
contents » context

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 1 el communications costs 4.2 developing a africa.*.