Perhaps you should try some spelling variations:
personal communication » interpersonal communication
beta developpement » et developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
variation using » variations during, variation und, variation among
ideologie de » ideologie der, ideologie des, ideologie du
de variation » der variation, die variation, does variation
using names » using games, using game, using times
a beta » _ beta, 1 beta, 2 beta

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

• Adding a wildcard symbol may retrieve word variants: ideologie de variation using names personal communication a beta developpement de l'afrique.*.