Perhaps you should try some spelling variations:
oral communication » personal communication
des developpements » deux developpements, de developpement, et developpements
developpements de » developpement de, developpement des, developpement du
does variation » de variation, der variation, die variation
variation des » variation _, variation 6, variation series
theorie does » theorie des, theorie der, theorie die
de afrique » de l'afrique, en afrique, l afrique
media des » media das, media der, media modes

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

• Adding a wildcard symbol may retrieve word variants: theorie does variation des hinves oral communication media des developpements de afrique.*.