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