Perhaps you should try some spelling variations:
innovations 5.3.4 » innovation 5.3.4, innovation 4.3.4, innovations 3.3.1
11 communication » 1.1 communication, 1 communication, 10 communication
developpement en » developpement et, developpement des, developpement de
5.3.4 practice » 5.3.1 practice, 5.3.2 practice, 5.3.3 practice
1 innovations » 12 innovations, _ innovations, 1 innovation
technology 1 » technology _
practice 11 » practice 1.1, practices 11, practice 1

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

• Adding a wildcard symbol may retrieve word variants: technology 1 innovations 5.3.4 practice 11 communication costs _ developpement en afrique.*.