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

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