Perhaps you should try some spelling variations:
cell communications » cell communication, health communications, rural communications
des variation » does variation, de variation, der variation
figures cell » figures de, figures les, figures only
des afrique » en afrique, de l'afrique
a du » a de, a u, _ du
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 _ figures cell communications ((a du) OR (a d)) developpement des afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ figures cell communications ((a du) OR (a d)) developpement des afrique.*.