Perhaps you should try some spelling variations:
information rates » information states, information ratio, information rules
2.3 communication » 3.2 communication, de communication, 4 communication
developpement la » developpement de, developpement et, developpement du
5.1 information » 3.1 information, 2.1 information, 4.1 information
technology 5.1 » technology 3.1, technology 2.1, technology 4.1
rates grace » rates greece
la afrique » l afrique, la fabrique, en afrique
grace 2.3 » france 2.3, oracle 2.3, space 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology 5.1 information rates grace 2.3 communication costs _ developpement la afrique.*.