Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
17 interaction » 10 interaction, 19 interaction, 11.7 interaction
technology 17 » technology 1.7, technology 171, technology 1
interaction 2 » interaction _, interaction 1, interaction 4
politics 2.1 » politics 12.1, politics 2.3, politics 4.1
2 politics » 2 political
de afrique » de l'afrique, en afrique, l afrique
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology 17 interaction 2 politics 2.1 communication costs le developpement de afrique.*.