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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("synchronised stemming") or ("synchronize stemming"))) or ((("synchronism stemming") OR ("synchronism steering"))))) or ("synchronized swimming"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("synchronised stemming") OR ("synchronize stemming"))) OR ((("synchronism stemming") OR ("synchronism steering"))))) OR ("synchronized swimming"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"synchronised stemming\") or (\"synchronize stemming\"))) or (((\"synchronism stemming\") OR (\"synchronism steering\"))))) or (\"synchronized swimming\"))*".
• Removing quotes may allow a broader search: (((((( synchronised stemming ) or ( synchronize stemming ))) or ((( synchronism stemming ) OR ( synchronism steering ))))) or ( synchronized swimming ))*.