Perhaps you should try some spelling variations:
actors communication » actions communication, active communication, networks communication
developpement zones » development zones, developpement des, development zone
technology concept » technology content, technology contents, technology choice
de developpement » sme development
zones africa » rates africa, towns africa, works africa
five actors » five factors, five sectors, five vectors
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technology concept formation _ five actors communication a de developpement zones africa.*.