Perhaps you should try some spelling variations:
"failure patient analysis" » "failure patients analysis", "failure latent analysis", "failure gradient analysis", "failure treatment analysis"
"failure patent analysis" » "failure content analysis", "failure point analysis", "failure event analysis", "failure patients analysis", "failure stent analysis", "failure patterns analysis"
"failure agent analysis" » "failure agents analysis", "failure event analysis", "failure fragment analysis", "failure gene analysis", "failure age analysis", "failure aging analysis"
"failure rates analysis" » "failure rate analysis", "failure rats analysis", "failure borates analysis", "failure role analysis"

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: (((("failure patient analysis") OR ((("failure patent analysis") OR ("failure agent analysis"))))) OR ("failure rates analysis")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"failure patient analysis\") or (((\"failure patent analysis\") OR (\"failure agent analysis\"))))) or (\"failure rates analysis\"))".
• Removing quotes may allow a broader search: (((( failure patient analysis ) or ((( failure patent analysis ) OR ( failure agent analysis ))))) or ( failure rates analysis )).
• Adding a wildcard symbol may retrieve word variants: (((("failure patient analysis") or ((("failure patent analysis") OR ("failure agent analysis"))))) or ("failure rates analysis"))*.