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
die integration » trade integration
d developpement » de developpement, du developpement, le developpement
technology die » technologie die, technology does, technology 4ir
des afrique » en afrique, de l'afrique
model d » model du, modell d, model 1

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 _ optical communications model d developpement des afrique.*.