Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
debt developpement » de developpement, et developpement, deux developpements
3.2 communication » 3 communication, 2.3 communication, de communication
developpement en » developpement et, developpement des, developpement de
technology der » technology does, technology 4ir, technology dlt
der informatik » der information, user information
informatik der » information der, information oder, informatik und
barriers debt » barriere der, barriers been, barriers cost
der wing » der wino, der windt, her wings
wing 3.2 » being 3.2, wing 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology der informatik der wing 3.2 communication barriers debt developpement en afrique.*.