cast about vs ransack

cast about

verb
  • To try to find; look around; search. 

  • To plan; plot; contrive. 

ransack

verb
  • To make a vigorous and thorough search of (a place, person) with a view to stealing something, especially when leaving behind a state of disarray. 

  • To violate; to ravish; to deflower. 

  • To loot or pillage. See also sack. 

noun
  • Eager search. 

How often have the words cast about and ransack occurred in a corpus of books? (source: Google Ngram Viewer )