Perhaps you should try some spelling variations:
"synchronism swimming" » "synchronize swimming", "synchronising swimming", "synchronized swimming"
"synchronised stemming" » "synchronized stemming", "synchronize stemming", "synchronising stemming", "synchronised steering", "synchronised stepping", "synchronised stealing"
"synchronised streaming" » "synchronized streaming", "synchronize streaming", "synchronising streaming", "synchronised treating"
"synchronised shipping" » "synchronized shipping", "synchronize shipping", "synchronising shipping", "synchronised shopping", "synchronised shifting", "synchronised shaping"
"synchronised flemming" » "synchronized flemming", "synchronize flemming", "synchronising flemming", "synchronised fleming"

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