Perhaps you should try some spelling variations:
personal communication » interpersonal communication
die developpement » de developpement, le developpement, du developpement
variation series » education series, action series, edition series
communication 13 » communication 1.3, communication 3, communication 1
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
das personal » des personal, des personals, haus personal
des afrique » en afrique, de l'afrique
series das » series data, series bias, series a
13 die » 1.3 die

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation series das personal communication 13 die developpement des afrique.*.