Perhaps you should try some spelling variations:
oral communication » personal communication
developpements l » developpements de, developpement il, developpement la
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
l afrique » en afrique
die oral » die moral, die orte
1 deux » a deux, 2 deux, 3 deux

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie de variation _ die oral communication ((1 deux) OR (10 deux)) developpements l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation _ die oral communication ((1 deux) OR (10 deux)) developpements l afrique.*.