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