Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
does development » dams development, ides development, smes development
development en » developpement en, development menu, development eco
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
series diw » series d, series new, series de
diw oral » i oral, ii oral, iii oral

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation series diw oral communication _ does development en afrique.*.