Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information last » information list, information lost, information law
developing areas » developing asia, developing east, developing a
d information » nd information, od information, und information
decade mobile » case mobile
technology d » technology 1, technology 3, technology 4
4 developing » 3 developing
areas africa » arabs africa, dress africa, farmers africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology d information last decade mobile communications costs 4 developing areas africa.*.