Perhaps you should try some spelling variations:
oral communication » personal communication
linear prediction » link prediction, clinical prediction
der developpement » de developpement, des developpements, leur developpement
typologie linear » typologie eines, typologie einiger, typologie der
developpement du » developpement de, developpement des, developpement et
du afrique » en afrique, l afrique, de l'afrique
series dr » series d, series de, series _
dr oral » dr osrar

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

• Adding a wildcard symbol may retrieve word variants: typologie linear prediction series dr oral communication _ der developpement du afrique.*.