Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication model » communication media
deep developpement » de developpement, deux developpements, le developpement
4ir integration » zur integration, der integration, 4 integration
developpement l » developpement il, developpement la, developpement de
technology 4ir » technology 4, technology 4.1, technology 4.2
2 optical » 12 optical, 20 optical, _ optical
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 4ir integration 3 2 optical communication model deep developpement l afrique.*.