Perhaps you should try some spelling variations:
does developpements » des developpements, de developpement, deux developpements
developpements de » developpement de, developpement des, developpement du
des variation » does variation, de variation, der variation
apologie des » l'apologie des, typologie des, apologien der
variation a » variation _, variation 6, variation 5
dana b » dana _, dana k, dana l
dana m » diana m, ana m, dana _
a does » 2 does, 4 does, 1 does

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

• If you are trying to use Boolean operators, they must be ALL CAPS: apologie des variation a ((dana b) OR (dana m)) communication a does developpements de l'afrique.~.
• Adding a wildcard symbol may retrieve word variants: apologie des variation a ((dana b) or (dana m)) communication a does developpements de l'afrique.*.