middling vs not too many

middling

noun
  • Something of intermediate or average size, position, or quality. 

  • Preceded by the: people of moderate means; members of the middle class. 

adv
  • Fairly, moderately, somewhat. 

  • Not too badly, with modest success. 

adj
  • In fairly good health. 

  • Of intermediate or average size, position, or quality; mediocre. 

not too many

How often have the words middling and not too many occurred in a corpus of books? (source: Google Ngram Viewer )