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

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 ((("synchronising flemming") or ("synchronising steering"))))) or ("synchronize swimming"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("synchronised stemming") OR ((("synchronising flemming") OR ("synchronising steering"))))) OR ("synchronize swimming")).
• Removing quotes may allow a broader search: (((( synchronised stemming ) or ((( synchronising flemming ) or ( synchronising steering ))))) or ( synchronize swimming )).
• Adding a wildcard symbol may retrieve word variants: (((("synchronised stemming") or ((("synchronising flemming") or ("synchronising steering"))))) or ("synchronize swimming"))*.