Talvez debería tentar con algunhas variantes ortográficas:
introduction comprehension » introduction comprehensive, information comprehension, instruction comprehensive
programming reactive » programming active, programming reaction, programming deductive
programming errors » programming effort, programming reactors, programming entropy
concept car » concept a

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

• If you are trying to use Boolean operators, they must be ALL CAPS: introduction comprehension ((programming errors) OR (programming reactive)) concept car~.
• Adding a wildcard symbol may retrieve word variants: introduction comprehension ((programming errors) or (programming reactive)) concept car*.