Perhaps you should try some spelling variations:
communication series » communication services, communication systems, communication skills
data communication » data communications
de developpements » des developpements, de developpement, deux developpements
developpements de » developpement de, developpement des, developpement du
variation bus » variation des, variation bei, variation due
costs data » cost data
de afrique » de l'afrique, en afrique, l afrique
bus costs » gas costs
series de » series d, series e, series new

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation bus costs data communication series de developpements de afrique.*.