Perhaps you should try some spelling variations:
20 communication » 10 communication, 2 communication, 2011 communication
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
information 2.2 » information 1.2, information 2.7, information 2.2.2
technologies 2 » technologies _, technologies 4
de afrique » de l'afrique, en afrique, l afrique
der 20 » der 270, der 24, der 25

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 2.2 der 20 communication _ et developpement de afrique.*.