Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
information oder » information der, information model, information code
de communication » mobile communication, online communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
barriers de » barriers d, barriere der, barriers key
oder den » oder der, wider den, uber den
den de » den die, den drei, orden de

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information oder den de communication barriers de developpement en afrique.*.