Perhaps you should try some spelling variations:
personal communication » interpersonal communication
variation series » education series, action series, edition series
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
communication 1 » communication _, communication a, communication 3
des variation » does variation, de variation, der variation
series 1945 » services 1945, series 14, series 1970
1 de » 1 die, 1 der, _ de
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation series 1945 personal communication 1 de developpement en afrique.*.