Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
technologies 2.1 » technologies _, technologies 4, technologies a
information does » information der, information due, information duties
et developpement » de developpement, le developpement, test development
2.1 information » 3.1 information
a communication » la communication, data communication, data communications
developpement l » developpement il, developpement la, developpement de
barriers et » barriers key, barriers _, barriers a
does debt » does de
l afrique » en afrique
debt a » debt _

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information does debt a communication barriers et developpement l afrique.*.