Perhaps you should try some spelling variations:
2 communications » 2 communication, 3 communications, 4 communications
developpements l » developpements de, developpement il, developpement la
technologies en » technologies e, technologies et, technologies can
en formation » de formation, 1 formation, self formation
l afrique » en afrique
data 2 » data 1, data 2.2, data 2.3
a des » a der
a das » 1 das, 2 das, 3 das

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 en formation _ data 2 communications ((a des) OR (a das)) developpements l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies en formation _ data 2 communications ((a des) OR (a das)) developpements l afrique.*.