Perhaps you should try some spelling variations:
oil communication » oral communication, social communication, moral communication
developpement l » developpement il, developpement la, developpement de
variation ende » variation und, variation de, variationen der
des variation » does variation, de variation, der variation
l afrique » en afrique
ende des » ende der
des oil » does oil, des oid, debt oil
a du » a d, a u, _ du
a de » a die, a der, a des
typologie » typologies, typology

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

• Performing a fuzzy search may retrieve terms with similar spellings: typologie des variation ende des oil communication ((a du) OR (a de)) developpement l afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie des variation ende des oil communication ((a du) OR (a de)) developpement l afrique.*".