Perhaps you should try some spelling variations:
vehicle communication » vehicular communication, device communication, voice communication
developpement l » developpement il, developpement la, developpement de
typologies des » typologie des, typologie der, typologien der
des variation » does variation, de variation, der variation
variation es » variation des, variation test, variations des
das vehicle » gas vehicle, gas vehicles, a vehicle
l afrique » en afrique
es das » eis das
12 et » 12 e, 13 et
2 et » 2 set, 2 ets, 2 get

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: "typologies des variation es das vehicle communication ((2 et) OR (12 et)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologies des variation es das vehicle communication ((2 et) OR (12 et)) developpement l afrique.*.