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
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
typologies die » typologies _, typologie des, typologie der
die variation » de variation, does variation, der variation
ones vertical » does vertical, forest vertical, under vertical
using ones » using one's, using one, using money
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: typologies die variation using ones vertical communications media en developpement en afrique.*.