Perhaps you should try some spelling variations:
developing across » developing cross, development across, developing areas
de communication » mobile communication, online communication
information und » informations und
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
across african » across africa, class african
und burden » und burde, und hurden, und burgern
burden de » wurden die, burden _, orden de
costs 2.3 » costs 4.2, costs 4.4

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information und burden de communication costs 2.3 developing across african.*.