Perhaps you should try some spelling variations:
data communication » data communications
die developpement » de developpement, le developpement, du developpement
developpement de » developpement des, developpement durable
4.1 variation » 1.1 variation, 2.1 variation, 4.3 variation
typology 4.1 » typology 2.2.1, typology _, ecology 4.1
variation a » variation _, variation 6, variation 5
cost data » test data
media die » medien die, media age

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

• Adding a wildcard symbol may retrieve word variants: typology 4.1 variation a cost data communication media die developpement de l'afrique.*.