Perhaps you should try some spelling variations:
"computer systems failures" » "computer systems failure", "computer system failure", "computer systems features"
"computer system figures" » "computer systems figures", "computer system figuring", "computer system pictures"

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 system failures") OR ("computer systems failures"))) OR ((("computer system figures") OR ("computer system features")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"computer system failures\") OR (\"computer systems failures\"))) or (((\"computer system figures\") or (\"computer system features\"))))".
• Removing quotes may allow a broader search: (((( computer system failures ) OR ( computer systems failures ))) or ((( computer system figures ) or ( computer system features )))).
• Adding a wildcard symbol may retrieve word variants: (((("computer system failures") OR ("computer systems failures"))) or ((("computer system figures") or ("computer system features"))))*.