Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement de » developpement des, developpement durable
soc information » c information, itc information, social information
information far » information fake, information flow, information from
technology soc » technology shock, technology some, technology set
de afrique » de l'afrique, en afrique, l afrique
can 3.2 » can 5.2, gan 3.2, man 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology soc information far can 3.2 communication costs _ developpement de afrique.*.