Perhaps you should try some spelling variations:
des developpements » deux developpements, de developpement, et developpements
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
information 5.4.2 » information 5.2.2, information 4.2, information 1.5.2
developpements en » developpement en, developpement et, developpements de
communications 1 » communications 14, communications _, communications a
technologies 4 » technologies _
4 information » 2 information, 1 information
5.4.2 ser » 5.4.2 user, 5.4.2 der, 5.4.2 secure
ser 3.1 » leser 3.1, users 3.1, user 3.3
1 des » 1 das, 1 der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 5.4.2 ser 3.1 communications 1 des developpements en afrique.*.