Perhaps you should try some spelling variations:
daten communication » data communication, water communication, patient communication
technologies aids » technologies varies, technologies a, technologies de
communication 2.4 » communication 3.3, communication 4, communication _
aids information » chandos information, series information
developing asia » development asia, developing a
information a » information age, information about
asia africa » cpia africa, china africa
5.2 daten » 3.2 daten, 14.2 daten, 16.2 daten
a 5.2 » a 3.2, a 4.2, a 5.1

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

• Adding a wildcard symbol may retrieve word variants: technologies aids information a 5.2 daten communication 2.4 _ developing asia africa.*.