Perhaps you should try some spelling variations:
du developpement » de developpement, le developpement, et developpement
innovation case » innovation based, innovation chapter, innovation center
developpement l » developpement il, developpement la, developpement de
technologies 4 » technologies _
4 innovation » 2 innovation, 3 innovation, der innovation
l afrique » en afrique
3.1 eu » 3.1 el, 3.2.1 eu, 5.3.1 eu
a du » a d, a de, a u

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: "technologies 4 innovation case ((3.1 eu) OR (2.1 eu)) communication a du developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 4 innovation case ((3.1 eu) OR (2.1 eu)) communication a du developpement l afrique.*.