Perhaps you should try some spelling variations:
developpement en » developpement et, developpement des, developpement de
ring interaction » rna interaction, during interactions, string interactions
technology ring » technology during, technology brings, technology using
1 communication » 10 communication, 3 communication, 4 communication
a developpement » au developpement, de developpement, le developpement
interaction 4 » interaction _, interaction 1, interaction a
4 political » 2 political
political 1 » political _, political 2, political 3.1
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 4 political 1 communication costs a developpement en afrique.*.