Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
information from » information flow, information flows
developpement de » developpement des, developpement durable
2.7 information » 2.1 information, 2.2 information, 2.3 information
technology 2.7 » technology 2.2, technology 2.1, technology 2.3
de afrique » de l'afrique, en afrique, l afrique
risk 4.1 » risks 4.1, risk 3.1, risk 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2.7 information from risk 4.1 communication disorders _ developpement de afrique.*.