Perhaps you should try some spelling variations:
"computer imaging, vision, maternal recognition and graphics" » "computer imaging, vision, mutual recognition and graphics", "computer imaging, vision, numeral recognition and graphics", "computer imaging, vision, mate recognition and graphics"
"computer imaging, vision, pattern recognition and graphics" » "computer imaging, vision, patterns recognition and graphics"

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 imaging, vision, maternal recognition and graphics") OR ("computer imaging, vision, pattern recognition and graphics")).
• Removing quotes may allow a broader search: (( computer imaging, vision, maternal recognition and graphics ) or ( computer imaging, vision, pattern recognition and graphics )).
• Adding a wildcard symbol may retrieve word variants: (("computer imaging, vision, maternal recognition and graphics") or ("computer imaging, vision, pattern recognition and graphics"))*.