Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement la » developpement de, developpement et, developpement du
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation und » variation _, variablen und, variation 6
la afrique » l afrique, la fabrique, en afrique
und does » guns does, und doch, aid does
does de » does debt
a bet » a best, a bent, a beta
a et » a set, a net, 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 bet)) developpement la 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 bet)) developpement la afrique.*".