Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
el communications » cell communications, sepl communications, 10 communications
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
3.3 developing » 4 developing, 2 developing, 1 developing
developing can » developing a, developing ai, developing av
contents 3.2 » content 3.2, contents 3.1, contexts 3.2
can africa » urban africa
costs 3.3 » costs 2.3, costs 3.5, costs 4.3

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 information contents 3.2 el communications costs 3.3 developing can africa.*.