Perhaps you should try some spelling variations:
does communication » zones communications, mass communication, c's communication
information rates » information states, information ratio, information rules
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
rates saving » water saving, rates during, rates using
saving does » saving houses, saving rates, saving money
de afrique » de l'afrique, en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 3 information rates saving does communication costs 4 developpement de afrique.*.