Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation und » variation _, variablen und, variation 6
und does » guns does, und doch, aid does
does de » does debt
a net » a new, _ net, a neo
a et » a set, a bet, a jet

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

• Performing a fuzzy search may retrieve terms with similar spellings: typologie der variation und does de communication ((a et) OR (a net)) developpement en afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie der variation und does de communication ((a et) OR (a net)) developpement en afrique.*".