Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
a a » a la

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation _ from personal communication a a developpement en afrique.*.