The return value of I18n.backend.send(:translations)
is just a hash, so you can access a subset just by passing in the appropriate keys.
e.g. if you have:
en:
foo:
bar:
some_term: "a translation"
some_other_term: "another translation"
Then you can get the the subset of the hash under bar
with:
I18n.backend.send(:translations)[:en][:foo][:bar]
#=> { :some_term=>"a translation", :some_other_term => "another translation"}