Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronism swimming", "synchronize swimming"
"synchronised flemming" » "synchronism flemming", "synchronize flemming", "synchronised fleming"
"synchronising stemming" » "synchronizing stemming", "synchronism stemming", "synchronisations stemming", "synchronising streaming", "synchronising steering", "synchronising stepping"

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 ((("synchronising stemming") or ("synchronised flemming"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("synchronised swimming") OR ("synchronized swimming"))) OR ((("synchronising stemming") OR ("synchronised flemming")))).
• Removing quotes may allow a broader search: (((( synchronised swimming ) or ( synchronized swimming ))) or ((( synchronising stemming ) or ( synchronised flemming )))).
• Adding a wildcard symbol may retrieve word variants: (((("synchronised swimming") or ("synchronized swimming"))) or ((("synchronising stemming") or ("synchronised flemming"))))*.