Perhaps you should try some spelling variations:
developpement l » developpement il, developpement la, developpement de
farmers mobile » farmers profile, farm mobile, farmers soil
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
variation i » variation im, variation _, variation 6
i farmers » _ farmers, 5 farmers, a farmers
l afrique » en afrique
a net » a new, _ net, a neo
a et » a set, a bet, a jet

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typology des variation i farmers mobile communication ((a et) OR (a net)) developpement l afrique.~.
• Adding a wildcard symbol may retrieve word variants: typology des variation i farmers mobile communication ((a et) or (a net)) developpement l afrique.*.