untruthful vs what you see is what you get

untruthful

adj

  • Pertaining to falsehood; corrupt; dishonest. 

  • Not giving the truth; providing untrue facts; lying. 

what you see is what you get

proverb

  • The image corresponds to the reality. 

  • The screen image resembles the printed output. 

How often have the words untruthful and what you see is what you get occurred in a corpus of books? (source: Google Ngram Viewer )