Perhaps you should try some spelling variations:
introduction comprehensive » introduction comparative
programming reactors » programming factors, programming reaction, programming reactive
programming entropy » programming energy, programming correntropy, programming esop
concept card » concept car, concept art, concept based

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: introduction comprehensive ((programming reactors) OR (programming entropy)) concept card~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "introduction comprehensive ((programming reactors) OR (programming entropy)) concept card".
• Adding a wildcard symbol may retrieve word variants: introduction comprehensive ((programming reactors) OR (programming entropy)) concept card*.