Perhaps you should try some spelling variations:
gabon communications » gambia communications, faso communications, japan communications
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
a le » a les, a l, a e
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 _ does gabon communications ((a le) OR (a la)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ does gabon communications ((a le) OR (a la)) developpement de afrique.*.