Perhaps you should try some spelling variations:
oral communication » personal communication
development cross » development across, development case, development co
technologien nd » technologien und, technologien ad, technologie und
3.1 development » 2 development
nd information » und information, d information, od information
information i » information im, information 2, information 1
cross african » across african, across africa, class african
know oral » new oral
costs 3.1 » costs 3.5, costs 4.1, costs 2.1
i know » _ know

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

• Adding a wildcard symbol may retrieve word variants: technologien nd information i know oral communication costs 3.1 development cross african.*.