Perhaps you should try some spelling variations:
vertical communications » vertical communication, optical communications, technical communications
communications media » communication media, communication india, communications series
en developpement » et developpement, de developpement, le developpement
variation using » variations during, variation und, variation among
developpement l » developpement il, developpement la, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
ones vertical » does vertical, forest vertical, under vertical
using ones » using one's, using one, using money
l afrique » en afrique
media en » media era, media _, media 1

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation using ones vertical communications media en developpement l afrique.*.