Perhaps you should try some spelling variations:
debt communication » de communication, et communication, get communication
innovation bases » innovation based, innovation cases, innovation brakes
developpement il » developpement de, developpement et, developpement du
il afrique » l afrique, en afrique
bases 3.1 » cases 3.1, bases 3.3, basis 3.1
3.1 debt » 3.1 det, 3.1 delta, 3.1 der
a le » a les, a la, a e
a l » a la

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 bases 3.1 debt communication ((a le) OR (a l)) developpement il afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies _ innovation bases 3.1 debt communication ((a le) OR (a l)) developpement il afrique.*.