Perhaps you should try some spelling variations:
twitter communication » written communication, better communication, matter communication
technologies used » technologies based, technology used, technologies _
de developpement » sme development
used innovation » user innovation, use innovation, based innovation
communication 1 » communication _, communication a, communication 3
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
1 de » 1 die, 1 der, _ de

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 1 de developpement des afrique.*.