Perhaps you should try some spelling variations:
oral communication » personal communication
developpement en » developpement et, developpement des, developpement de
apologien de » apologien der, apologia de, apologie des
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
knew oral » knew moral, new oral, new moral
6 knew » 6 know, i knew

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

• Adding a wildcard symbol may retrieve word variants: apologien de variation 6 knew oral communication media _ developpement en afrique.*.