Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
communication model » communication media
integrating world » integrated world, integrating area, integrating land
led developpement » le developpement, leur developpement, de developpement
developpement en » developpement et, developpement des, developpement de
1.1 integrating » 1.4 integrating, 3.1 integrating, 4.1 integrating
technology 1.1 » technology 3.1, technology 2.1, technology 4.1
model led » model land, model law, model listed
3 device » 3 devices, _ device, a device
world 3 » world _, world a, world 1

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

• Adding a wildcard symbol may retrieve word variants: technology 1.1 integrating world 3 device communication model led developpement en afrique.*.