Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
leur developpement » le developpement, deux developpements, de developpement
technologies case » technologies based, technologies can, technologies create
case formulation » basic formulation, chain formulation, space formulation
developpement la » developpement de, developpement et, developpement du
formulation de » formulation des, formulacion de, formulation du
barriere leur » barriere der, barriers learn, barrieren der
la afrique » l afrique, la fabrique, 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 case formulation de does _ communication barriere leur developpement la afrique.*.