Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
developpement en » developpement et, developpement des, developpement de
formulation des » formation des, formulacion de, formulation _
a communication » la communication, data communication, data communications
a developpement » au developpement, de developpement, le developpement
technologies a » technologies _, technologies 4, technologies 2
a formulation » la formulation, _ formulation, 3 formulation
barriers a » barriers _, barrier _
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 a formulation des does a communication barriers a developpement en afrique.*.