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

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