in spades vs no holds barred

in spades

prep
  • In large quantities; to a high degree; to excess, without restraint. 

  • Beyond doubt. 

no holds barred

adj
  • Without restrictions on holds or what opponents may do. 

  • Having absolutely no limits or restrictions as far as the levels and nature of one's hostilities and offense; taking to an especially ruthless or vicious manner. 

How often have the words in spades and no holds barred occurred in a corpus of books? (source: Google Ngram Viewer )