set of questions vs viva

set of questions

viva

verb
  • To subject to an examination of this kind. 

intj
  • Long live ... ! (used to express acclaim or support). 

noun
  • An oral examination, typically for an academic qualification. 

  • A shout of applause. 

How often have the words set of questions and viva occurred in a corpus of books? (source: Google Ngram Viewer )