Perhaps you should try some spelling variations:
source development » resource development, resources development, commerce development
de communication » mobile communication, online communication
development en » developpement en, development menu, development eco
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
typology der » typologie der, typologien der, typologie des
des soe » des soa, des sols, des sous

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

• Adding a wildcard symbol may retrieve word variants: typology der variation des soe de communication a source development en afrique.*.