Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronized swimming", "synchronism swimming", "synchronize swimming", "synchronised stemming"
"synchronised stealing" » "synchronized stealing", "synchronism stealing", "synchronize stealing"
"synchronised scaling" » "synchronized scaling", "synchronism scaling", "synchronize scaling"
"synchronised steering" » "synchronized steering", "synchronism steering", "synchronize steering"
"synchronised streaming" » "synchronized streaming", "synchronism streaming", "synchronize streaming", "synchronised treating"

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 stealing") OR ("synchronised scaling"))) or ("synchronised steering"))) or ("synchronised streaming"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("synchronised swimming") OR ((((((("synchronised stealing") OR ("synchronised scaling"))) OR ("synchronised steering"))) OR ("synchronised streaming")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"synchronised swimming\") or (((((((\"synchronised stealing\") OR (\"synchronised scaling\"))) or (\"synchronised steering\"))) or (\"synchronised streaming\"))))".
• Removing quotes may allow a broader search: (( synchronised swimming ) or ((((((( synchronised stealing ) OR ( synchronised scaling ))) or ( synchronised steering ))) or ( synchronised streaming )))).
• Adding a wildcard symbol may retrieve word variants: (("synchronised swimming") or ((((((("synchronised stealing") OR ("synchronised scaling"))) or ("synchronised steering"))) or ("synchronised streaming"))))*.