Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
innovation when » innovation where, innovation what, innovation why
has voice » a voice, has nice, has price
when has » where has, when base, when have
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology change innovation when has voice communication costs le developpement en afrique.*.