Perhaps you should try some spelling variations:
5.4.1 information » 3.4.1 information, 7.4.1 information, 16.4.1 information
information rates » information states, information ratio, information rules
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technology 5.4.1 » technology 4.1, technology 5.1, technology 1.4.4
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
rates grace » rates greece
de afrique » de l'afrique, en afrique, l afrique
grace 6.2 » space 6.2, grain 6.2, race 6.4
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 5.4.1 information rates grace 6.2 communication costs a developpement de afrique.*.