Perhaps you should try some spelling variations:
"computers / programming / ocean resource / bisacsh" » "computers / programming / ocean resources / bisacsh", "computers / programming / human resource / bisacsh"
"computers / programming / open resource / bisacsh" » "computers / programming / open resources / bisacsh", "computers / programming / open source / bisacsh", "computers / programming / open sources / bisacsh"

Try widening your search to All Fields.

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

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