Perhaps you should try some spelling variations:
personal communication » interpersonal communication
ou developpement » du developpement, au developpement, de 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 ou » a o, a u, a su

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 ou developpement des afrique.*.