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

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