Perhaps you should try some spelling variations:
twitter communication » written communication, better communication, matter communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
technology used » technology use, technology based, technology users
used innovation » user innovation, use innovation, based innovation
innovation 1 » innovation _, innovation a
data twitter » auf twitter, der twitter
1 data » 2.1 data, 3.1 data, 4.1 data

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

• Adding a wildcard symbol may retrieve word variants: technology used innovation 1 data twitter communication _ de developpement en afrique.*.