Perhaps you should try some spelling variations:
oral communication » personal communication
technologies 1 » technologies _, technologies 4, technologies 2
information i » information im, information 2, information 1
states africa » states african, state africa, status africa
4 developing » 3 developing
der oral » der moral, der ort, der orte
costs 4 » costs _, costs a, costs 4.2
i der » ii der, _ der, 2 der

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 1 information i der oral communication costs 4 developing states africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies 1 information i der oral communication costs 4 developing states africa.*.