Perhaps you should try some spelling variations:
communication system » communication systems, telecommunication system, communication series
la communication » data communication, data communications
des information » des informations, does information, dis information
typologies des » typologie des, typologie der, typologien der
system social » systems social
a afrique » l afrique, en afrique

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

• Adding a wildcard symbol may retrieve word variants: typologies des information gap _ la communication system social development a afrique.*.