Perhaps you should try some spelling variations:
communications model » communications models, communication model, communicating model
voice communications » mobile communications, guinea communications, online communications
integrating world » integrated world, integrating area, integrating land
au developpement » du developpement, de developpement, le 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 au » modele au, model a, model aa
world 3 » world _, world a, world 1
3 voice » 3 voices, _ voice, a voice

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 voice communications model au developpement en afrique.*.