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

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