Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications models » communication model, communication modes, communicating model
integration work » integrating world, integration framework, integration 3
developpement en » developpement et, developpement des, developpement de
technologie die » technologie de, technologie im, technologie der
die integration » trade integration
d developpement » de developpement, du developpement, le developpement
1 optical » 12 optical, 14 optical, _ optical
models d » models 1, models 3, models 2
work 1 » work 3, work 6, work 7

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

• Adding a wildcard symbol may retrieve word variants: technologie die integration work 1 optical communications models d developpement en afrique.*.