Perhaps you should try some spelling variations:
technologies authors » technologies methods, technologies cohort, technology author
radio communications » radio communication, data communications
communications costs » communication costs, communications _
authors information » author information, autonomy information, networks information
information 2 » information 3
3 developing » 3 development
add radio » a radio, und radio, dm radio
costs 3 » costs _, costs 4, costs a
2 add » _ add, 1 add, 2 adr

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

• Adding a wildcard symbol may retrieve word variants: technologies authors information 2 add radio communications costs 3 developing _ areas.*.