Perhaps you should try some spelling variations:
"del paciente book new" » "del paciente con new", "del presente book new", "del ambiente book new", "del paciente look now"
"del science food ver" » "del science from ver", "del science mad ver", "del science mind ver"
"open science book over" » "en sciences book over", "new science book over", "open science from over", "open science vol over"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("del science food ver") OR ("del paciente book new"))) OR ("open science book over"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"del science food ver\") OR (\"del paciente book new\"))) OR (\"open science book over\"))*".
• Removing quotes may allow a broader search: (((( del science food ver ) OR ( del paciente book new ))) OR ( open science book over ))*.