Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
der developpement » de developpement, des developpements, leur developpement
technologies re » technologies ret, technologies art, technologies _
formulation des » formation des, formulacion de, formulation _
developpement l » developpement il, developpement la, developpement de
re formulation » rule formulation, _ formulation, 3 formulation
barriere der » barrieren der, barrieren des, barriera di
l afrique » en afrique
des does » des doses, der does, des dorfes

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

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