Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement durable » developpement de
communication 12 » communication 1, communication 2, communication 10
aktion personal » action personal, million personal
e developpement » de developpement, le developpement, et developpement
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
6 aktion » _ aktion, 1 aktion, 6 action
12 e » 12 et, 12 _, 12 a

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation 6 aktion personal communication 12 e developpement durable afrique.*.