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

You may be able to get more results by adjusting your search query.

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