Perhaps you should try some spelling variations:
communication model » communication media
time communication » de communication, mobile communication, online communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
1.2 time » 4.2 time, 7.2 time, 1 time
model de » model due, model d, model du
3 1.2 » 3 15.2, b 1.2, _ 1.2

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

• Adding a wildcard symbol may retrieve word variants: technology _ integration 3 1.2 time communication model de developpement en afrique.*.