Perhaps you should try some spelling variations:
developpement manuel » development manuel, developpement quel, developpement mondial
autors communication » actors communication, actions communication, networks communication
gas developpement » gas development, au developpement, des developpements
typologies der » typologie der, typologien der, typologie des
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
des autors » des auteurs
des des » des deas, des dem, des der
a gas » _ gas, 2 gas, 3 gas

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

• Adding a wildcard symbol may retrieve word variants: typologies der variation des des autors communication a gas developpement manuel afrique.*.