Perhaps you should try some spelling variations:
personal communication » interpersonal communication
variation series » education series, action series, edition series
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
typologie its » typologie des, typologie et, typologie cices
its variation » its variations, does variation, les variations
d personal » de personal, a personal, 1 personal
series d » series _, series 1, series 2

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

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