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