Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
technologies trade » technology trade, technologies case, technologies table
trade information » price information, private information, trade integration
communication 2.4 » communication 3.3, communication 4, communication _
information age » information storage, information access, information about
development li » development lid, development lie, development lin
li afrique » l afrique, en afrique
2.4 a » 2.4 _, 2.1 a, 2.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologies trade information age _ actors communication 2.4 a development li afrique.*.