Perhaps you should try some spelling variations:
under debate » gender debates, badger debate, der debatte
ding under » king under, riding under, ding und
crises how » crisis how
how stable » do stable, how scale, how state
wing yan » wang yan, wing ian, wang yang
wing tan » wing ian, liang tan, hong tan

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) OR (wing tan)) ding under debate during crises how stable ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing yan) OR (wing tan)) ding under debate during crises how stable ;".
• Adding a wildcard symbol may retrieve word variants: ((wing yan) OR (wing tan)) ding under debate during crises how stable ;*.