Perhaps you should try some spelling variations:
"computer aimed design" » "computer aide design", "computer animated design", "computer assited design", "computer timed design", "computer timed designs", "computer mixed design"
"computer added design" » "computer age design", "computer aids design", "computer added designs", "computer adder design", "computer added designed"
"computer guided design" » "computer guide design", "computer aided designs"
"computer aid design" » "computer art design", "computer a design", "computer als design", "computer rapid design", "computer grid design", "computer card design"
"computer aided design" » "computer arted design", "computer aed design", "computer alsed 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") OR ("computer aided design"))) OR ("computer guided 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\") OR (\"computer aided design\"))) or (\"computer guided design\"))))".
• Removing quotes may allow a broader search: (((( computer aimed design ) or ( computer aid design ))) or ((((( computer added design ) OR ( computer aided design ))) or ( computer guided design )))).
• Adding a wildcard symbol may retrieve word variants: (((("computer aimed design") or ("computer aid design"))) or ((((("computer added design") OR ("computer aided design"))) or ("computer guided design"))))*.