Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
du developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
ideologie der » ideologie und, typologie der
der variation » de variation, does variation, die variation
series vii » series iii, series vol, series ein
l afrique » en afrique
vii oral » ii oral, iii oral, i oral
media du » media die, media das, media der

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

• Adding a wildcard symbol may retrieve word variants: ideologie der variation series vii oral communication media du developpement l afrique.*.