Perhaps you should try some spelling variations:
optic communication » optical communications, public communication, device communication
der developpements » des developpements, deux developpements, de developpement
developpements en » developpement en, developpement et, developpements de
communication 2 » communication _, communication a, communication 3
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
der optic » der option, der opec, der optes

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation _ der optic communication 2 der developpements en afrique.*.