Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
child developpement » child development, le developpement, china development
developpement en » developpement et, developpement des, developpement de
3 information » 1 information
information 2 » information 3
technology 3 » technology _, technology 1, technology 4
costs child » costs china
2 cost » 3.2 cost, 5.2 cost

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

• Adding a wildcard symbol may retrieve word variants: technology 3 information 2 cost actors communication costs child developpement en afrique.*.