Perhaps you should try some spelling variations:
communication model » communication media
time communication » de communication, mobile communication, online communication
21st integration » post integration, test integration, 2 integration
integration work » integrating world, integration framework, integration 3
developpement en » developpement et, developpement des, developpement de
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
d developpement » de developpement, du developpement, le developpement
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 21st integration work _ time communication model d developpement en afrique.*.