Perhaps you should try some spelling variations:
online communications » online communication, online kommunikation, mobile communications
developpement de » developpement des, developpement durable
farmers online » partners online, farmers convinced, farmers alliance
a variation » la variation, _ variation, 2 variation
typology a » typology _, typology 6, theology a
de afrique » de l'afrique, en afrique, l afrique
a du » a de, a u, _ du

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: "typology a variation _ farmers online communications ((a du) OR (a d)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology a variation _ farmers online communications ((a du) OR (a d)) developpement de afrique.*.