Perhaps you should try some spelling variations:
cell communications » cell communication, health communications, rural communications
developpement de » developpement des, developpement durable
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation bei » variation des, variation der, variation _
es cell » es cells, does cell, test cell
bei es » bei ex
a zu » a zur, a zum, a z
2 zu » 2 zur, 2 zum

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: "typologie does variation bei es cell communications ((a zu) OR (2 zu)) developpement de l'afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie does variation bei es cell communications ((a zu) OR (2 zu)) developpement de l'afrique.*.