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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("synchronizing swimming") or ("synchronised steering"))) or ("synchronised streaming"))) or ("synchronized swimming"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("synchronizing swimming") OR ("synchronised steering"))) OR ("synchronised streaming"))) OR ("synchronized swimming")).
• Removing quotes may allow a broader search: (((((( synchronizing swimming ) or ( synchronised steering ))) or ( synchronised streaming ))) or ( synchronized swimming )).
• Adding a wildcard symbol may retrieve word variants: (((((("synchronizing swimming") or ("synchronised steering"))) or ("synchronised streaming"))) or ("synchronized swimming"))*.