Perhaps you should try some spelling variations:
developpement l » developpement il, developpement la, developpement de
farmers mobile » farmers profile, farm mobile, farmers soil
de variation » der variation, die variation, does variation
apology de » apologia de, apology mea, apology _
l afrique » en afrique
a bet » a best, a bent, a beta
a et » a set, a net, a jet

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: "apology de variation _ farmers mobile communication ((a et) OR (a bet)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: apology de variation _ farmers mobile communication ((a et) OR (a bet)) developpement l afrique.*.