Perhaps you should try some spelling variations:
communication barrier » communication barriers, communication series, communication based
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
3 communication » 4 communication, de communication, data communication
developpement l » developpement il, developpement la, developpement de
information do » information does, information der, information due
l afrique » en afrique
do does » do dogs, der does, who does
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 2.1 information do does 3 communication barrier _ developpement l afrique.*.