Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronism swimming", "synchronize swimming"
"synchronised stemming" » "synchronism stemming", "synchronize stemming", "synchronised streaming", "synchronised stepping", "synchronised stealing"
"synchronised flemming" » "synchronism flemming", "synchronize flemming", "synchronised fleming"
"synchronising stemming" » "synchronising streaming", "synchronising stepping", "synchronising stealing", "synchronizing stemming", "synchronism stemming", "synchronisations stemming"
"synchronising steering" » "synchronizing steering", "synchronism steering", "synchronisations steering"

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