Perhaps you should try some spelling variations:
communication model » communication media
face communication » voice communication, de communication, time communication
developpement en » developpement et, developpement des, developpement de
5.2 integration » 2.2 integration, 3.2 integration, 4.4.2 integration
1 developpement » de developpement, le developpement, et developpement
technology 5.2 » technology 2.2, technology 3.2, technology 4.2
a face » a fact

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

• Adding a wildcard symbol may retrieve word variants: technology 5.2 integration 3 a face communication model 1 developpement en afrique.*.