Perhaps you should try some spelling variations:
"computers / computed linear / bisacsh" » "computers / computers linear / bisacsh", "computers / computed nonlinear / bisacsh", "computers / computing linear / bisacsh"
"computers / computer linear / bisacsh" » "computers / computers linear / bisacsh", "computers / computer lunar / bisacsh", "computers / computer nonlinear / bisacsh"
"computers / computer literacy / bisacsh" » "computers / computer literary / bisacsh"

Try widening your search to All Fields.

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: (("computers / computer literacy / bisacsh") OR ((("computers / computed linear / bisacsh") OR ("computers / computer linear / bisacsh")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"computers / computer literacy / bisacsh\") or (((\"computers / computed linear / bisacsh\") OR (\"computers / computer linear / bisacsh\"))))".
• Removing quotes may allow a broader search: (( computers / computer literacy / bisacsh ) or ((( computers / computed linear / bisacsh ) OR ( computers / computer linear / bisacsh )))).
• Adding a wildcard symbol may retrieve word variants: (("computers / computer literacy / bisacsh") or ((("computers / computed linear / bisacsh") OR ("computers / computer linear / bisacsh"))))*.