Perhaps you should try some spelling variations:
data communication » data communications
developpement de » developpement des, developpement durable
des variations » les variations, does variation, its variations
de afrique » de l'afrique, en afrique, l afrique
ties data » studies data
a net » a new, _ net, a neo
a et » a set, a bet, a jet
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 variations _ ties data communication ((a et) OR (a net)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variations _ ties data communication ((a et) OR (a net)) developpement de afrique.*.