Perhaps you should try some spelling variations:
el communication » cell communication, real communication, 3 communication
innovation case » innovation based, innovation chapter, innovation center
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
case 3.1 » case 4.1, case 3.2, case 1
3.1 el » 1.1 el
3 les » 2 les, 5 les
1 les » 2 les

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 _ innovation case 3.1 el communication ((3 les) OR (1 les)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies _ innovation case 3.1 el communication ((3 les) OR (1 les)) developpement l afrique.*.