Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication model » communication media
integration work » integrating world, integration framework, integration 3
developpement en » developpement et, developpement des, developpement de
dis integration » disintegration _
d developpement » de developpement, du developpement, le developpement
technology dis » technology does, technology 4ir, technology dlt
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 dis integration work _ optical communication model d developpement en afrique.*.