Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
der developpements » des developpements, deux developpements, de developpement
developpements la » developpement la, developpements de, developpement de
technologies et » technologies e, technologies art, technologies bit
formulation der » formulation des, formulation de, formulation over
et formulation » _ formulation, 3 formulation, 2 formulation
barriere der » barrieren der, barrieren des, barriera di
la afrique » l afrique, la fabrique, en afrique

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

• Adding a wildcard symbol may retrieve word variants: technologies et formulation der does _ communication barriere der developpements la afrique.*.