Perhaps you should try some spelling variations:
trade developpement » trade developement, trade development, de developpement
communication index » communication india, communication ideas, communication instead
oral communication » personal communication
typologien does » typologie des, typologien der, typologie der
developpement l » developpement il, developpement la, developpement de
does variation » de variation, der variation, die variation
variation 14 » variation 4, variation 3.4, variation 6.4
l afrique » en afrique
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 14 etc oral communication index trade developpement l afrique.*.