Perhaps you should try some spelling variations:
"computer aimed design" » "computer aided design", "computer aide design", "computer animated design", "computer timed design", "computer timed designs"
"computer added design" » "computer aided design", "computer guided design", "computer age design", "computer added designs", "computer adder design"
"computer aid design" » "computer aided design", "computer art design", "computer a design", "computer rapid design", "computer grid design"

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: (((("computer aimed design") OR ("computer aid design"))) OR ("computer added design")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"computer aimed design\") OR (\"computer aid design\"))) or (\"computer added design\"))".
• Removing quotes may allow a broader search: (((( computer aimed design ) OR ( computer aid design ))) or ( computer added design )).
• Adding a wildcard symbol may retrieve word variants: (((("computer aimed design") OR ("computer aid design"))) or ("computer added design"))*.