Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications model » communications models, communication model, communicating model
integrating world » integrated world, integrating area, integrating land
a developpement » au developpement, de developpement, le developpement
4 integrating » _ integrating
technology 4 » technology _, technology 1, technology 3
des afrique » en afrique, de l'afrique
3 mobile » _ mobile, a mobile, 2 mobile
world 3 » world _, world a, world 1
model a » model 1

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

• Adding a wildcard symbol may retrieve word variants: technology 4 integrating world 3 mobile communications model a developpement des afrique.*.