Talvez debería tentar con algunhas variantes ortográficas:
"chronic metal failures" » "chronic metal failure", "chronic mental failures", "chronic total failures", "chronic medical failures"
"chronic fetal failure" » "chronic mental failure", "chronic total failure", "chronic central failure", "chronic metal failure", "chronic metals failure", "chronic cell failure"
"chronic renal failure" » "chronic real failure"

Try widening your search to Todos os campos.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("chronic renal failure") or ("chronic metal failures"))) or ("chronic fetal failure"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chronic renal failure") OR ("chronic metal failures"))) OR ("chronic fetal failure")).
• Removing quotes may allow a broader search: (((( chronic renal failure ) or ( chronic metal failures ))) or ( chronic fetal failure )).
• Adding a wildcard symbol may retrieve word variants: (((("chronic renal failure") or ("chronic metal failures"))) or ("chronic fetal failure"))*.