Perhaps you should try some spelling variations:
walter communication » water communication, master communication, matter communication
communication model » communication media
due developpement » de developpement, du developpement, le developpement
technologies und » technologie und, technologien und, technologies under
developpement en » developpement et, developpement des, developpement de
hans walter » hatch walter
model due » model du, model deep, model d
a hans » a hands, a hand

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

• Adding a wildcard symbol may retrieve word variants: technologies und innovation a hans walter communication model due developpement en afrique.*.