Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
technologies rule » technologies reduce, technologies could, technologies ret
formulation where » formulation over, formulation des, calculation where
der developpement » de developpement, des developpements, leur developpement
rule formulation » re formulation, la formulation, case formulation
developpement il » developpement de, developpement et, developpement du
3 communication » 4 communication, de communication, data communication
barriers der » barriere der, barrieren der, barriers d
il afrique » 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 rule formulation where _ 3 communication barriers der developpement il afrique.*.