Perhaps you should try some spelling variations:
und debatten » die debatten, 2.1 debatten, 6 debatten
under debate » gender debates, badger debate, der debatte
und debate » un debate, aid debate, old debate
crises how » crisis how
how scale » how stable, how small, how space
wing yan » wang yan, wing ian, wing tan
yan ding » san dinge, yan liang, yang jing

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ding ((((und debate) OR (und debatten))) OR (under debate)) during crises how scale ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ding ((((und debate) OR (und debatten))) or (under debate)) during crises how scale ;~".
• Adding a wildcard symbol may retrieve word variants: wing yan ding ((((und debate) OR (und debatten))) or (under debate)) during crises how scale ;*.