Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronize swimming", "synchronising swimming", "synchronised stemming"
"synchronised flemming" » "synchronize flemming", "synchronising flemming", "synchronised fleming"
"synchronised streaming" » "synchronize streaming", "synchronising streaming", "synchronised treating"
"synchronized stealing" » "synchronized sealing", "synchronized dealing", "synchronized scaling"
"synchronism streaming" » "synchronism treating", "synchronize streaming", "synchronising streaming"

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