Perhaps you should try some spelling variations:
oral communication » personal communication
later developments » water development, rate developments, leader development
technology change » technological change, technological changes
change tradition » lange tradition, changes traditional, exchange traditions
tradition der » tradition _, tradition und
crisis oral » crisis oil
costs later » costs water, costs matter, costs labor
der crisis » der krisis, de crisis, under crisis

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

• Adding a wildcard symbol may retrieve word variants: technology change tradition der crisis oral communication costs later developments _ artic.*.