Perhaps you should try some spelling variations:
external communication » internal communication, internal communications, personal communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
innovation 2 » innovation 1, innovation 4, innovation 3
das external » does external, tdts external, vs external
2 das » 1 das
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies _ innovation 2 das external communication a der developpement en afrique.*.