Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
leur developpement » le developpement, deux developpements, de developpement
variation series » education series, action series, edition series
developpement de » developpement des, developpement durable
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
series deas » series bias, series de, series models
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation series deas voice communication a leur developpement de afrique.*.