Perhaps you should try some spelling variations:
information security » information society, information sharing
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
developpement de » developpement des, developpement durable
security code » security costs
technology 2 » technology _, technology 1, technology 3
de afrique » de l'afrique, en afrique, l afrique
code 2.7 » code 2.1, code 2.3, code 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2 information security code 2.7 communication costs _ developpement de afrique.*.