Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
du developpement » de developpement, le developpement, et developpement
formulation der » formulation des, formulation de, formulation over
4 communication » 3 communication, 5.4 communication, de communication
developpement l » developpement il, developpement la, developpement de
barriere du » barriere der, barriera di, barriers d
l afrique » en afrique
does 4 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation der does 4 communication barriere du developpement l afrique.*.