Perhaps you should try some spelling variations:
communication services » telecommunications services
data communication » data communications
au developpement » du developpement, de developpement, le developpement
4.1 variation » 1.1 variation, 2.1 variation, 4.3 variation
typology 4.1 » typology 2.2.1, typology _, ecology 4.1
services au » services a, services ad, services ai
des afrique » en afrique, de l'afrique
costs data » cost data

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 _ costs data communication services au developpement des afrique.*.