Perhaps you should try some spelling variations:
oral communication » personal communication
developpement la » developpement de, developpement et, developpement du
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation des » variation _, variation 6, variation series
ideas oral » ideas global
la afrique » l afrique, la fabrique, en afrique
des ideas » des idees, des deas, dos ideas
a du » a d, a u, _ du
a de » a die, a der, a des

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 die variation des ideas oral communication ((a du) OR (a de)) developpement la afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation des ideas oral communication ((a du) OR (a de)) developpement la afrique.*.