Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications modell » communications models, communication model, communicating model
things integration » china's integration, china integration, doing integration
technology things » technology brings, technologies things, technology chinese
developpement de » developpement des, developpement durable
2 developpement » de developpement, le developpement, et developpement
de afrique » de l'afrique, en afrique, l afrique
2 optical » 12 optical, 20 optical, _ optical
modell 2 » model 2, modell 1, modell 4

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology things integration 3 2 optical communications modell 2 developpement de afrique.*.