Perhaps you should try some spelling variations:
communication system » communication systems, telecommunication system, communication series
des developpements » deux developpements, de developpement, et developpements
developpements des » developpement des, developpements de, developpement de
1 transformation » 4 transformation, die transformation, der transformation
transformation b » transformation _, transformation a, transformation 1
technologie 1 » technologies 1, technologien 1, technologie c
system des » system der, system design
des africa » does africa, yes africa, de africa
1.2 risk » 11.2 risk, 2.2 risk, 4.2 risk
b 1.2 » b 2.2, b 1.1

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

• Adding a wildcard symbol may retrieve word variants: technologie 1 transformation b 1.2 risk communication system des developpements des africa.*.