Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
oral communication » personal communication
clean development » human development, urban development
technologies 2 » technologies _, technologies 4
politisch oral » politische moral, politics moral, politisch das
und politisch » und politische, und politischer, und politischem
relation und » relationen und, relations under, relation india
2 relation » 5 relation, 4 relation, 6 relation
cost clean » costs clear
a aortic » _ aortic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 relation und politisch oral communication cost clean development a aortic.*.