Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
communications costs » communication costs, communications _
change information » chandos information, trade information
information 2 » information 3
4 developing » 3 developing
developing a » developing _
costs 4 » costs _, costs a, costs 4.2
a areas » 1 areas, 2 areas, 4 areas
2 und » _ und, i und
technological » technologies

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

• Adding a wildcard symbol may retrieve word variants: technological change information 2 und radio communications costs 4 developing a areas.*.