Perhaps you should try some spelling variations:
"synchronised swimming" » "synchronized swimming", "synchronize swimming", "synchronising swimming", "synchronised stemming"
"synchronised streaming" » "synchronized streaming", "synchronize streaming", "synchronising streaming", "synchronised treating"
"synchronism streaming" » "synchronism treating", "synchronize streaming", "synchronising streaming", "synchronized streaming"

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