Perhaps you should try some spelling variations:
chefs communication » chairs communication, c's communication, class communication
de developpement » sme development
developpement de » developpement des, developpement durable
information a » information age, information about
technology 1 » technology _
de afrique » de l'afrique, en afrique, l afrique
des chefs » des chaos
costs de » costs _, costs 4, costs a
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information a des chefs communication costs de developpement de afrique.*.