Perhaps you should try some spelling variations:
communication 4.1.1 » communication 4.2.1, communication 4.3.1, communication 4.1.7.1
de developpement » sme development
technology used » technology use, technology based, technology users
used innovation » user innovation, use innovation, based innovation
time mediated » simple mediated, time mediating, video mediated
innovation 4 » innovation _, innovation a, innovation 1
des africa » does africa, yes africa, de africa
4.1.1 de » 4.1.1 die, 4.1.1 der, 2.1.1 de
4 time » 3 time

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

• Adding a wildcard symbol may retrieve word variants: technology used innovation 4 time mediated communication 4.1.1 de developpement des africa.*.