Perhaps you should try some spelling variations:
personal communication » interpersonal communication
does developpement » de developpement, des developpements, does development
developpement de » developpement des, developpement durable
variation oder » variation der, variation over, variation des
how variation » how valuation, does variation, four variation
typology how » typology from, typology _, typology 4.1
des personal » des personals, der personal, das personal
de afrique » de l'afrique, en afrique, l afrique
oder des » oder der, oder das, oder den

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

• Adding a wildcard symbol may retrieve word variants: typology how variation oder des personal communication _ does developpement de afrique.*.