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
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
l afrique » en afrique
ende des » ende der
des oil » does oil, des oid, debt oil
a bet » a best, a bent, a beta
a et » a set, a net, a jet

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

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