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