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

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