local taxi vs marshrutka

local taxi

noun
  • A share taxi 

marshrutka

noun
  • A share taxi in the CIS countries, the Baltic states, and Bulgaria. The role of the modern marshrutka is similar to that of the minibus in other countries, except that some implementations of marshrutka allow passengers to stand. 

How often have the words local taxi and marshrutka occurred in a corpus of books? (source: Google Ngram Viewer )