Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
2.5 communication » 2.3 communication, 2.7 communication, 3.5 communication
developpement de » developpement des, developpement durable
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
storage dam » storage dams, storage a, storage do
de afrique » de l'afrique, en afrique, l afrique
dam 2.5 » dam 5.5, dm 2.5, dam 4.15
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: technologien ad information storage dam 2.5 communication a des developpement de afrique.*.