Perhaps you should try some spelling variations:
communication series » communication services, communication systems, communication skills
formulation where » formulation over, formulation des, calculation where
der developpement » de developpement, des developpements, leur developpement
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
series der » serien der, series de, series d

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 series der developpement en afrique.*.