Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
2.1 information » 3.1 information
information how » information 2, information 1, information 1.2
4 developpement » de developpement, le developpement, et developpement
technology 2.1 » technology 2.2, technology 3.1, technology 1
des afrique » en afrique, de l'afrique
etapes de » etudes de, etats de, types de
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 2.1 information how etapes de communication costs 4 developpement des afrique.*.