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

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