Perhaps you should try some spelling variations:
cell communication » cell communications, oral communication, verbal communication
variation using » variations during, variation und, variation among
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
des l'afrique » de l'afrique, de l'amerique
using a » using _
a cell » _ cell

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation using a cell communication media _ developpement des l'afrique.*.