Perhaps you should try some spelling variations:
oral communication » personal communication
technologies 2 » technologies _, technologies 4
contents mit » contents mot, contents list, contents main
4 developing » 3 developing
developing e » developing _, developing a, developing east
mit oral » mit olaf
e africa » em africa, de africa, eu africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents mit oral communication costs 4 developing e africa.*.