Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication model » communication media
integrating area » integrating a, integrating new, integrating data
2.2 integrating » 3.2 integrating, 4.2 integrating, 5.2 integrating
d developpement » de developpement, du developpement, le developpement
technology 2.2 » technology _, technology 1, technology 3
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 2.2 integrating area _ optical communication model d developpement des afrique.*.