Perhaps you should try some spelling variations:
case communications » face communications, faso communications, wave communications
developpement de » developpement des, developpement durable
e developpement » de developpement, le developpement, et developpement
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
3 costs » 3 cost
4 costs » 4 cost
typologie » typologies, typology

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie des variation ((3 costs) OR (4 costs)) case communications _ e developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation ((3 costs) OR (4 costs)) case communications _ e developpement de afrique.*.