Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
des developpement » des developpements, de developpement, le developpement
technologien des » technologien fur, technologien und, technologies 2
developpement en » developpement et, developpement des, developpement de
a communication » la communication, data communication, data communications
des simulation » der simulation, de simulation, dis simulation
simulation 3 » simulation _, simulation 4
barriere des » barrieren des, karriere des, barriere der
3 causes » _ causes, 1 causes, 2 causes
causes a » causes _, cause a, causes 1

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

• Adding a wildcard symbol may retrieve word variants: technologien des simulation 3 causes a communication barriere des developpement en afrique.*.