Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
au developpement » du developpement, de developpement, le developpement
developpement la » developpement de, developpement et, developpement du
technologies 2 » technologies _, technologies 4
formulation et » formulation des, formulation _, formulation 3
2 formulation » _ formulation, 3 formulation, la formulation
barriers au » barriers a, barriers aa, barriers law
la afrique » l afrique, la fabrique, en afrique
et does » et des, der does, act does

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 formulation et does _ communication barriers au developpement la afrique.*.