Perhaps you should try some spelling variations:
personal communication » interpersonal communication
variation series » education series, action series, edition series
de developpement » sme development
communication 1 » communication _, communication a, communication 3
1970 personal » 1945 personal, p90 personal, 1 personal
de variation » der variation, die variation, does variation
typology de » typology _, typology 6, typology a
series 1970 » series 1707, series 1982, series 1992
des afrique » en afrique, de l'afrique
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: typology de variation series 1970 personal communication 1 de developpement des afrique.*.