Perhaps you should try some spelling variations:
data communication » data communications
communication tool » communication tools, communication togo, communication two
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
typologies 2.3 » typologies 2.5, typologies 6.3, typologie 1.3
2.3 variation » 3.3 variation, 1.3 variation, 2.1 variation
nm data » em data, aim data, dpm data

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: typologies 2.3 variation _ nm data communication tool leur developpement en afrique.*.