Perhaps you should try some spelling variations:
oral communication » personal communication
trade development » software development
development li » development lid, development lie, development lin
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
li afrique » l afrique, en afrique
des water » does water, des warner, less water

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation des water oral communication _ trade development li afrique.*.