Perhaps you should try some spelling variations:
"symmetric goups" » "symmetric groups", "symmetric group", "symmetric gauss"
"symmetry group" » "symmetric group", "symmetric groups"
"symmetry groups" » "symmetric groups", "symmetric groupss"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("symmetry group") OR ((("symmetry groups") OR ("symmetric goups")))).
• Removing quotes may allow a broader search: (( symmetry group ) or ((( symmetry groups ) or ( symmetric goups )))).
• Adding a wildcard symbol may retrieve word variants: (("symmetry group") or ((("symmetry groups") or ("symmetric goups"))))*.