Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
ring interaction » rna interaction, during interactions, string interactions
technology ring » technology during, technology brings, technology using
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
politics 4.1 » politics 2.3, politics _, politics a
l afrique » en afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology ring interaction _ politics 4.1 communication costs a developpement l afrique.*.