Perhaps you should try some spelling variations:
oral communication » personal communication
developpement en » developpement et, developpement des, developpement de
variation oder » variation der, variation over, variation des
typologie 2 » topologie 2, typologies _, typologie et
2 variation » 2 variations
oder new » order new, der new, over new
new oral » new moral, knew moral, new rural
a does » 2 does, 1 does, 3 does
4 does » 2 does

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie 2 variation oder new oral communication ((a does) OR (4 does)) developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie 2 variation oder new oral communication ((a does) OR (4 does)) developpement en afrique.*.