Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
des developpements » deux developpements, de developpement, et developpements
formulation where » formulation over, formulation des, calculation where
technologies ret » technologies _, technologies 4, technologies 2
developpements l » developpements de, developpement il, developpement la
ret formulation » et formulation, re formulation, from formulation
i communication » ii communication, ai communication, 3 communication
barriers des » barrieren des, barriere der, barriers d
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technologies ret formulation where _ i communication barriers des developpements l afrique.*.