Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
developpement en » developpement et, developpement des, developpement de
information one » information alone, information oder, information open
3 communication » 4 communication, de communication, data communication
technologies 2 » technologies _, technologies 4
does 3 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information one does 3 communication barriers _ developpement en afrique.*.