Perhaps you should try some spelling variations:
oral communication » personal communication
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
does variation » de variation, der variation, die variation
theorie does » theorie des, theorie der, theorie die
de afrique » de l'afrique, en afrique, l afrique
media der » media order, media under, mediale der

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

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