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

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 u developpement des afrique.*.