Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement en » developpement et, developpement des, developpement de
innovation 17.5 » innovation 11.5, innovation 1.5, innovation 14.5
17.5 practical » 7.5 practical, 12.5 practical, 1.2 practical
practical 2.3 » practical 10.3, practices 2.3, practice 2.3
technology 3 » technology _, technology 1, technology 4
3 innovation » 2 innovation

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

• Adding a wildcard symbol may retrieve word variants: technology 3 innovation 17.5 practical 2.3 communication costs _ developpement en afrique.*.