Perhaps you should try some spelling variations:
"synchronisations swimming" » "synchronisation swimming", "synchronizations swimming", "synchronization swimming"
"synchronised stemming" » "synchronized stemming", "synchronize stemming", "synchronising stemming", "synchronised streaming", "synchronised steering", "synchronised flemming"
"synchronism stemming" » "synchronism streaming", "synchronism steering", "synchronism flemming", "synchronize stemming", "synchronising stemming", "synchronized stemming"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("synchronisations swimming") or ((("synchronised stemming") or ("synchronism stemming"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("synchronisations swimming") OR ((("synchronised stemming") OR ("synchronism stemming")))).
• Removing quotes may allow a broader search: (( synchronisations swimming ) or ((( synchronised stemming ) or ( synchronism stemming )))).
• Adding a wildcard symbol may retrieve word variants: (("synchronisations swimming") or ((("synchronised stemming") or ("synchronism stemming"))))*.