Perhaps you should try some spelling variations:
personal communication » interpersonal communication
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
variation among » starvation among, formation among, variation von
des variation » does variation, de variation, der variation
boys personal » loans personal, roles personal, son's personal
typology des » typologie des, typologie der, typology _
a et » a set, a net, a bet

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

• Adding a wildcard symbol may retrieve word variants: typology des variation among boys personal communication a et developpement en afrique.*.