Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
leur developpement » le developpement, deux developpements, de developpement
technologies re » technologies ret, technologies art, technologies _
developpement l » developpement il, developpement la, developpement de
re formulation » rule formulation, _ formulation, 3 formulation
formulation de » formulation des, formulacion de, formulation du
barriere leur » barriere der, barriers learn, barrieren der
l afrique » en afrique
de does » der does, do does, one does

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

• Adding a wildcard symbol may retrieve word variants: technologies re formulation de does _ communication barriere leur developpement l afrique.*.