Perhaps you should try some spelling variations:
le developpement » de developpement, sme development
innovation case » innovation based, innovation chapter, innovation center
communication 2 » communication _, communication a, communication 3
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
4.2 der » 2.2 der, 3.2 der
4.2 de » 4.2 die, 4.2 den, 4.2 des
2 le » 2 les, 2 la, 2 re

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 ((4.2 de) OR (4.2 der)) communication 2 le developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies _ innovation case ((4.2 de) OR (4.2 der)) communication 2 le developpement l afrique.*.