Perhaps you should try some spelling variations:
oral communication » personal communication
du developpement » de developpement, le developpement, et developpement
de variation » der variation, die variation, does variation
figures oral » figures draw, figures a, figures from
typology de » typology _, typology 6, typology a
des afrique » en afrique, de l'afrique
a du » a d, a de, a u

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

• Adding a wildcard symbol may retrieve word variants: typology de variation _ figures oral communication a du developpement des afrique.*.