Perhaps you should try some spelling variations:
trade developpement » trade developement, trade development, de developpement
oral communication » personal communication
efforts trade » exports trade, efforts have, efforts role
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 3 » variation _, variation 6, variation 5
des afrique » en afrique, de l'afrique
one oral » one moral, one rural, one oil
3 one » _ one, a one

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 3 one oral communication efforts trade developpement des afrique.*.