Perhaps you should try some spelling variations:
personal communication » interpersonal communication
un developpement » en developpement, de developpement, le developpement
areal variation » spatial variation, annual variations, local variations
typology areal » typology alma
die personal » die personale, de personal, die persona
des afrique » en afrique, de l'afrique
a un » a une, _ un

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

• Adding a wildcard symbol may retrieve word variants: typology areal variation _ die personal communication a un developpement des afrique.*.