Perhaps you should try some spelling variations:
debat during » debate during, debt during, exit during
crises how » crisis how
how space » how race
un debat » un debate, le debat, du debat
wan yan » wang yan, wai yan, wang yang
nan yan » nan ya, wang yan, qian yan
ying un » ding und, tying up, ying jin

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan yan) or (nan yan)) ying un debat during crises how space ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan yan) OR (nan yan)) ying un debat during crises how space ;.
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (nan yan)) ying un debat during crises how space ;*.