Talvez debería tentar con algunhas variantes ortográficas:
instruction comprehensive » introduction comprehensive, introduction comprehension, constructive comprehension
programming thread » programming real, programming third, programming team
programming tutor » programming tutorial, programming theory, programming two
concepts cases » concepts chapter

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: instruction comprehensive ((programming tutor) OR (programming thread)) concepts cases~.
• Adding a wildcard symbol may retrieve word variants: instruction comprehensive ((programming tutor) or (programming thread)) concepts cases*.