Perhaps you should try some spelling variations:
optical communicating » optical communications, optical communication, optic communication
communicating model » communication model, communicating under, communication modes
trade integrating » trade integration, true integrating, drama integrating
integrating world » integrated world, integrating area, integrating land
technology trade » technology trends, technology transfer, technology transfers
developpement la » developpement de, developpement et, developpement du
d developpement » de developpement, du developpement, le developpement
la afrique » l afrique, la fabrique, en 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 trade integrating world _ optical communicating model d developpement la afrique.*.