Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications model » communications models, communication model, communicating model
integration work » integrating world, integration framework, integration 3
developpement en » developpement et, developpement des, developpement de
die integration » trade integration
d developpement » de developpement, du developpement, le developpement
technology die » technologie die, technology does, technology 4ir
1 optical » 12 optical, 14 optical, _ optical
model d » model du, modell d, model 1
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: technology die integration work 1 optical communications model d developpement en afrique.*.