Perhaps you should try some spelling variations:
technological challenges » technological changes, methodological challenges, technological change
challenges information » challenges informality, challenge innovation, challenges oration
les communications » laos communications, nps communications, u.s communications
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
information 3 » information 2
1 les » 2 les

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

• Adding a wildcard symbol may retrieve word variants: technological challenges information 3 1 les communications _ le developpement en afrique.*.