Perhaps you should try some spelling variations:
information rates » information states, information ratio, information rules
4.4 communication » 5.4 communication, 4.1 communication, 1.4 communication
developpement de » developpement des, developpement durable
4 information » 2 information, 1 information
technology 4 » technology _, technology 1, technology 3
rates case » rates cape, states case, rates east
de afrique » de l'afrique, en afrique, l afrique
case 4.4 » case 4.1, case 4.2, case 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology 4 information rates case 4.4 communication costs _ developpement de afrique.*.