Perhaps you should try some spelling variations:
des developpements » deux developpements, de developpement, et developpements
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
developpements en » developpement en, developpement et, developpements de
technologies die » technologies de, technologie die, technologies bit
die information » time information, life information, age information
systems des » systems der, system des, systeme des
des 3.1 » pdes 3.1, ses 3.1, les 3.1

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

• Adding a wildcard symbol may retrieve word variants: technologies die information systems des 3.1 communication _ des developpements en afrique.*.