Perhaps you should try some spelling variations:
"failure patients analysis" » "failure agents analysis", "failure patterns analysis", "failure pigments analysis", "failure treatments analysis"
"failure patient analysis" » "failure patent analysis", "failure latent analysis", "failure gradient analysis", "failure treatment analysis"

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: "((\"failure patient analysis\") OR (\"failure patients analysis\"))*".
• Removing quotes may allow a broader search: (( failure patient analysis ) OR ( failure patients analysis ))*.