Perhaps you should try some spelling variations:
communication across » communication cross, communicating across, communication about
grade developpement » trade developement, trade development, de developpement
oral communication » personal communication
developpement de » developpement des, developpement durable
typologien does » typologie des, typologien der, typologie der
does variation » de variation, der variation, die variation
across grade » across gender
etc oral » etc moral, etc arab, etc iran

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

• Adding a wildcard symbol may retrieve word variants: typologien does variation _ etc oral communication across grade developpement de l'afrique.*.