Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
since development » science development, mine development, site development
information oder » information der, information model, information code
de communication » mobile communication, online communication
barriers since » barriers signs, barriers using
development et » development east, developpement et, development eco
et afrique » en afrique, l afrique
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 since development et afrique.*.