Perhaps you should try some spelling variations:
oral communication » personal communication
communication cost » communication costs, communication costa, communications costs
technologien und » technologie und, technologien des, technologien fur
und information » fund information, road information, award information
2.5 developing » 25.5 developing, 2.2 developing, 1.5 developing
contents der » content der, contents je, contents key
der oral » der moral, der ort, der orte
cost 2.5 » costs 2.5, cost 2.4, cost 2.2

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

• Adding a wildcard symbol may retrieve word variants: technologien und information contents der oral communication cost 2.5 developing _ africa.*.