Perhaps you should try some spelling variations:
african communication » africa communications, vertical communication, optical communication
communication model » communication media
integrating world » integrated world, integrating area, integrating land
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
4.1 integrating » 4.12 integrating, 4.2 integrating, 4.3 integrating
technology 4.1 » technology 3.1, technology 2.1, technology 1
model de » model due, model d, model du

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 integrating world _ african communication model de developpement en afrique.*.