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