Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
development en » developpement en, development menu, development eco
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
farm online » from online, face online, fur online
1 test » f test, 4 test, 3 test
2 test » 3.2 test

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie der variation _ farm online communication ((1 test) OR (2 test)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation _ farm online communication ((1 test) OR (2 test)) development en afrique.*.