Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronism swimming", "synchronising swimming", "synchronised stemming"
"synchronized swimming" » "synchronized stemming", "synchronismd swimming", "synchronizingd swimming"
"synchronismd swimming" » "synchronismd stemming", "synchronism swimming", "synchronising swimming"
"synchronize swimming" » "synchronize stemming", "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 ((("synchronized swimming") OR ("synchronismd swimming"))))) or ("synchronize swimming"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("synchronised swimming") OR ((("synchronized swimming") OR ("synchronismd swimming"))))) OR ("synchronize swimming")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"synchronised swimming\") or (((\"synchronized swimming\") OR (\"synchronismd swimming\"))))) or (\"synchronize swimming\"))".
• Removing quotes may allow a broader search: (((( synchronised swimming ) or ((( synchronized swimming ) OR ( synchronismd swimming ))))) or ( synchronize swimming )).
• Adding a wildcard symbol may retrieve word variants: (((("synchronised swimming") or ((("synchronized swimming") OR ("synchronismd swimming"))))) or ("synchronize swimming"))*.