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

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