dolmus vs jeepney

dolmus

noun
  • A share taxi in Turkey. 

jeepney

noun
  • A vehicle used as public transport in the Philippines, originally made from US military Jeeps left over from World War II and well known for their flamboyant decoration and crowded seating. 

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