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

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