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

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