Perhaps you should try some spelling variations:
vertical communication » verbal communication, virtual communication, optical communication
communication model » communication media
technology sector » technology series, technology social
law developpement » le developpement, au developpement, leur developpement
developpement de » developpement des, developpement durable
2 vertical » _ vertical, 6 vertical, 4 vertical
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology sector integration 3 2 vertical communication model law developpement de afrique.*.