Perhaps you should try some spelling variations:
convinced kommunikation » online kommunikation
farmers convinced » farmers confronted
set developpement » et developpement, de developpement, le developpement
developpement il » developpement de, developpement et, developpement du
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
il afrique » l afrique, en afrique
und set » und seit, fund set, und seht

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

• Adding a wildcard symbol may retrieve word variants: typology des variation _ farmers convinced kommunikation und set developpement il afrique.*.