Perhaps you should try some spelling variations:
le developpement » de developpement, sme development
innovation case » innovation based, innovation chapter, innovation center
communication 3 » communication _, communication a
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
4.1 den » 4.1 der, 4.1 dex, 6.1 den
4.1 de » 4.1 die, 4.1 der, 4.1 dex
3 le » 3 les, 3 la, 1 le

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 ((4.1 de) OR (4.1 den)) communication 3 le developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies _ innovation case ((4.1 de) OR (4.1 den)) communication 3 le developpement l afrique.*.