Perhaps you should try some spelling variations:
formulation 4.7.1 » formulation 4.2.1, formulation 4.7.5, formulation 2.1.1
der developpement » de developpement, des developpements, leur developpement
de communication » mobile communication, online communication
developpement de » developpement des, developpement durable
4.7.1 does » 6.7.1 does, 14.3.1 does, 2.3.1 does
de afrique » de l'afrique, en afrique, l afrique
media der » media order, media under, mediale der
does de » does debt

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

• Adding a wildcard symbol may retrieve word variants: technologies _ formulation 4.7.1 does de communication media der developpement de afrique.*.