Perhaps you should try some spelling variations:
communication network » communication networks, communications network, communications networks
data communication » data communications
technologies math » technologies may, technologies a, technologies art
math information » catch information, much information, health information
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
network et » network e, network era, network _
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: technologies math information law _ data communication network et developpement de afrique.*.