Perhaps you should try some spelling variations:
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
technologies 2 » technologies _, technologies 4
information a » information age, information about
de afrique » de l'afrique, en afrique, l afrique
der do » der de, der db, der door

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 2 information a ((der do) OR (der does)) communications _ du developpement de afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 2 information a ((der do) OR (der does)) communications _ du developpement de afrique.".
• Adding a wildcard symbol may retrieve word variants: technologies 2 information a ((der do) OR (der does)) communications _ du developpement de afrique.*.