Perhaps you should try some spelling variations:
twitter communication » written communication, better communication, matter communication
technologies used » technologies based, technology used, technologies _
communication 17 » communication 1, communication 10, communication 7
de developpement » sme development
used innovation » user innovation, use innovation, based innovation
innovation 2 » innovation 1, innovation 4, innovation 3
das twitter » data twitter, der twitter, das wetter
des afrique » en afrique, de l'afrique
2 das » 1 das
17 de » 17 die, 17 der, 17 des

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

• Adding a wildcard symbol may retrieve word variants: technologies used innovation 2 das twitter communication 17 de developpement des afrique.*.