Perhaps you should try some spelling variations:
layer communication » water communication, jander communication, master communication
technologies used » technologies based, technology used, technologies _
des developpement » des developpements, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
used innovation » user innovation, use innovation, based innovation
innovation 4 » innovation _, innovation a, innovation 1
das layer » das lager, last layer, a layer
4 das » 1 das, 2 das, 3 das
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: technologies used innovation 4 das layer communication a des developpement en afrique.*.