Perhaps you should try some spelling variations:
"computer aimed design" » "computer aided design", "computer aid design", "computer added design", "computer timed design", "computer mixed design"
"computer timed designs" » "computer time designs", "compute time designs", "computers time designs", "computer timed design", "computer aided designs", "computer time design"

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: "((\"computer aimed design\") OR (\"computer timed designs\"))".
• Removing quotes may allow a broader search: (( computer aimed design ) OR ( computer timed designs )).
• Adding a wildcard symbol may retrieve word variants: (("computer aimed design") OR ("computer timed designs"))*.