Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
formulation where » formulation over, formulation des, calculation where
technologies ret » technologies _, technologies 4, technologies 2
developpement en » developpement et, developpement des, developpement de
ret formulation » et formulation, re formulation, from formulation
i communication » ii communication, ai communication, 3 communication
d developpement » de developpement, du developpement, le developpement
barriers d » barriers _, barriers a, barriers 4

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 d developpement en afrique.*.