Perhaps you should try some spelling variations:
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
a des » a der, a das
dr e » d e, dr h
do i » do _

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typologie does variation _ ((dr e) OR (do i)) communication a des developpements en afrique.~.
• Adding a wildcard symbol may retrieve word variants: typologie does variation _ ((dr e) or (do i)) communication a des developpements en afrique.*.