as much as vs if only

as much as

conj
  • Used other than figuratively or idiomatically: see as, much. 

  • Used to say that two things are equal in amount or degree 

  • Even though; despite the fact that 

  • Used to say that an amount is as large as another amount 

adv
  • So much as, even. 

  • Practically, just as, no less than; indicates an action tantamount to, but not identical to, the action described. 

if only

conj
  • Used other than figuratively or idiomatically: see if, only. 

  • I wish that; signifies a wish or desire for the present or the future. 

  • I wish that; signifies a regret about an action in the past. 

  • Even if for no other reason than; only just. 

How often have the words as much as and if only occurred in a corpus of books? (source: Google Ngram Viewer )