Introducing the phrase_lookup gem

require 'phrase_lookup'

s = "
how are you james
how are you sally
"

pl = PhraseLookup.new s
pl.q 'h'
#=> ["how are you james", "how are you sally"]

pl.q 'How are you Jam'
#=> ["how are you james"]

pl.q 'you Sally'
#=> ["how are you sally"]