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

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

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