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