Perhaps you should try some spelling variations:
oral communication » personal communication
typologien der » typologie der, typologie des, apologien der
development en » developpement en, development menu, development eco
der variation » de variation, does variation, die variation
variation do » variation de, variation du, variation des
firms oral » firms rural, firms deal, firms global
et se » et de, et le, et sa

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: "typologien der variation do firms oral communication ((et se) OR (et ses)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologien der variation do firms oral communication ((et se) OR (et ses)) development en afrique.*.