Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
set communications » sepl communications, et communication, et communicatione
technologies aids » technologies varies, technologies a, technologies de
aids information » chandos information, series information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
developing use » developing e, developing ce, developing csi
contents a » contents 1, contents _, contents i
costs 2.4 » costs 12.4, costs 23.4, cost 2.4
a set » _ set

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

• Adding a wildcard symbol may retrieve word variants: technologies aids information contents a set communications costs 2.4 developing use africa.*.