Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
pit communication » put communication, post communication, et communication
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
technologie 3d » technologies 3d, technologie 3, technologie und
3d informal » 3 informal, 3.3 informal, 3.5 informal
barriers le » barriers law, barriers key, barriers _
often pit » open pit
groups » group

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

• Adding a wildcard symbol may retrieve word variants: technologie 3d informal groups often pit communication barriers le developpement en afrique.*.