Perhaps you should try some spelling variations:
under debate » gender debates, badger debate, der debatte
how stable » do stable, how state, how viable
un debate » un debat, u.s debate, _ debate
how scale » how small, how space, new scale
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.

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