Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
dm developpement » de developpement, du developpement, le developpement
developpement en » developpement et, developpement des, developpement de
formulation des » formation des, formulacion de, formulation _
a communication » la communication, data communication, data communications
barriers dm » barriers d, barriers _, barriers a
des does » des doses, der does, des dorfes
does a » does _

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

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation des does a communication barriers dm developpement en afrique.*.