Perhaps you should try some spelling variations:
3.3.2 communication » 3.4.2 communication, 3.2.3.2 communication, 13.3.9 communication
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
innovation bat » innovation brac, innovation b, innovation based
technology 1 » technology _
1 innovation » 2 innovation, 3 innovation, 4 innovation
sample 3.3.2 » sample 3.5.2, sample 9.3.2, sample 1.3.2
bat sample » data sample, a sample, das sample
de afrique » de l'afrique, en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 innovation bat sample 3.3.2 communication costs 4 developpement de afrique.*.