Perhaps you should try some spelling variations:
convinced communications » advanced communication, coordinated communication, guinea communications
farmers convinced » farmers confronted
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
variation a » variation _, variation 6, variation 5
a farmers » a farmer's, _ farmers, 5 farmers

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

• Adding a wildcard symbol may retrieve word variants: typology der variation a farmers convinced communications _ et developpement en afrique.*.