all over the map vs here and there

all over the map

prep
  • Widely scattered or distributed; numerous and differing greatly. 

  • In widely scattered directions; in a widely varying manner. 

here and there

adv
  • In, at or to various places; in one place and another. 

  • From time to time; intermittently, occasionally. 

How often have the words all over the map and here and there occurred in a corpus of books? (source: Google Ngram Viewer )