Perhaps you should try some spelling variations:
personal communications » personal communication, interpersonal communications, internal communications
die developpement » de developpement, le developpement, du developpement
communications a » communications _, communications law, communications media
cluster action » clusters actor, cluster detection
die personal » die personale, de personal, die persona
des afrique » en afrique, de l'afrique
action 2 » action _, action a, action 1
a die » 3 die, _ die, 1 die

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

• Adding a wildcard symbol may retrieve word variants: typology cluster action 2 die personal communications a die developpement des afrique.*.