Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
technologies pt » technologies _, technologies 4, technologies 2
information amp » information age, information a, information act
pt information » ct information, plot information, get information
der actors » key actors, new actors, aet actors
systems 2 » systems 1, systems 3, systems 2.1
amp der » amp de, amp dior

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

• Adding a wildcard symbol may retrieve word variants: technologies pt information amp der actors communication systems 2 development 1 africa.*.