Perhaps you should try some spelling variations:
"synchronised stemming" » "synchronism stemming", "synchronize stemming", "synchronising stemming", "synchronised stepping", "synchronised stealing", "synchronised stenning"
"synchronised steering" » "synchronism steering", "synchronize steering", "synchronising steering"
"synchronized treating" » "synchronized creating", "synchronized heating", "synchronized relating"
"synchronized flemming" » "synchronized fleming"

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