Perhaps you should try some spelling variations:
"introduction computing" » "introduction comparing", "introduction computer", "introduction computation"
"reproduction computer" » "production computer", "reproduction computing", "reproduction chapter"
"reproduction company" » "production company", "reproduction computing", "reproduction impact"

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: (("reproduction company") OR ((("reproduction computer") OR ("introduction computing")))).
• Removing quotes may allow a broader search: (( reproduction company ) or ((( reproduction computer ) or ( introduction computing )))).
• Adding a wildcard symbol may retrieve word variants: (("reproduction company") or ((("reproduction computer") or ("introduction computing"))))*.