Perhaps you should try some spelling variations:
communications services » communication services, communication series, telecommunications services
au developpement » du developpement, de developpement, le developpement
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
services au » services a, services ad, services ai
des afrique » en afrique, de l'afrique
cost data » test data

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

• Adding a wildcard symbol may retrieve word variants: typology der variation _ cost data communications services au developpement des afrique.*.