Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronized swimming", "synchronism swimming", "synchronising swimming", "synchronised stemming"
"synchronizingd swimming" » "synchronizingd stemming", "synchronizing swimming", "synchronising swimming", "synchronized swimming"
"synchronize swimming" » "synchronize stemming", "synchronized swimming", "synchronism swimming", "synchronizing swimming"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("synchronised swimming") or ("synchronizingd swimming"))) or ("synchronize swimming"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("synchronised swimming") OR ("synchronizingd swimming"))) OR ("synchronize swimming")).
• Removing quotes may allow a broader search: (((( synchronised swimming ) or ( synchronizingd swimming ))) or ( synchronize swimming )).
• Adding a wildcard symbol may retrieve word variants: (((("synchronised swimming") or ("synchronizingd swimming"))) or ("synchronize swimming"))*.