Perhaps you should try some spelling variations:
das developpement » des developpements, de developpement, du developpement
10 communication » 1 communication, de communication, 3 communication
developpement de » developpement des, developpement durable
services survey » services series, services security, services service
communication 2 » communication _, communication a, communication 3
technologies 2 » technologies _, technologies 4
de afrique » de l'afrique, en afrique, l afrique
survey 10 » survey 1, survey 10.4, survey 2010
2 das » 1 das

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information services survey 10 communication 2 das developpement de afrique.*.