Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
3.2 communication » 3 communication, 2.3 communication, de communication
information from » information flow, information flows
du developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
barriers du » barriers d, barriers _, barriers a
l afrique » en afrique
from pre » from peru
pre 3.2 » pre 3.4.2, care 3.2, core 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology _ information from pre 3.2 communication barriers du developpement l afrique.*.