Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
technologien aids » technologien als, technologien ad, technologien des
5.4 communication » de communication, data communication
aids information » chandos information, series information
developing na » developing a, developing new, developing net
4 developing » 3 developing
content how » contents how, context how, content from
na america » war america, can america, new america
how 5.4 » how 2.4, how 3.4, how 9.4
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: technologien aids information content how 5.4 communication costs 4 developing na america.*.