Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronized swimming", "synchronism swimming", "synchronize swimming"
"synchronised streaming" » "synchronized streaming", "synchronism streaming", "synchronize streaming", "synchronised treating"
"synchronised fleming" » "synchronized fleming", "synchronism fleming", "synchronize fleming"
"synchronising stemming" » "synchronizing stemming", "synchronism stemming", "synchronisations stemming", "synchronising steering", "synchronising flemming", "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 ((((("synchronised streaming") or ("synchronising stemming"))) or ("synchronised fleming"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("synchronised swimming") OR ((((("synchronised streaming") OR ("synchronising stemming"))) OR ("synchronised fleming")))).
• Removing quotes may allow a broader search: (( synchronised swimming ) or ((((( synchronised streaming ) or ( synchronising stemming ))) or ( synchronised fleming )))).
• Adding a wildcard symbol may retrieve word variants: (("synchronised swimming") or ((((("synchronised streaming") or ("synchronising stemming"))) or ("synchronised fleming"))))*.