Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications model » communications models, communication model, communicating model
led developpement » le developpement, leur developpement, de developpement
integration work » integrating world, integration framework, integration 3
die integration » trade integration
developpement l » developpement il, developpement la, developpement de
technology die » technologie die, technology does, technology 4ir
model led » model land, model law, model listed
l afrique » en afrique

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 led developpement l afrique.*.