Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
des variation » does variation, de variation, der variation
variation 6 » variation _, variations _, variation des
des afrique » en afrique, de l'afrique
6 deas » 6 ideas, 6 dead
a die » 2 die, 3 die, 1 die
_ die » 2 die, 3 die
typologie » typologies, typology

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie des variation 6 deas voice communication ((a die) OR (_ die)) developpement des afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation 6 deas voice communication ((a die) OR (_ die)) developpement des afrique.*.