Perhaps you should try some spelling variations:
eras communication » lea's communication, class communication, plans communication
developpement du » developpement de, developpement des, developpement et
typologien de » typologien der, typologie des, typologie der
de variation » der variation, die variation, does variation
du afrique » en afrique, l afrique, de l'afrique
a dot » _ dot
a do » _ do, a d, a co

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

• Performing a fuzzy search may retrieve terms with similar spellings: typologien de variation _ fire eras communication ((a do) OR (a dot)) developpement du afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typologien de variation _ fire eras communication ((a do) OR (a dot)) developpement du afrique.*".