Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpements durable » developpement durable, developpement rural, developpements de
des developpements » deux developpements, de developpement, et developpements
variation being » variation bei, variation using, variation among
maybe personal » manage personal, have personal, more personal
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation being maybe personal communication a des developpements durable afrique.*.