Perhaps you should try some spelling variations:
"del sciences hours ever" » "del sciences hors ever", "del science hours ever", "en sciences hours ever", "les sciences hours ever"
"del paciente book ever" » "del paciente con ever", "del science book ever", "del presente book ever", "del ambiente book ever"
"en science from ever" » "en science food ever", "en science book ever", "en science vol ever", "en sciences from ever", "open science from ever", "del science from ever", "en science from her"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("en science from ever") OR ("del paciente book ever"))) OR ("del sciences hours ever"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"en science from ever\") OR (\"del paciente book ever\"))) OR (\"del sciences hours ever\"))".
• Removing quotes may allow a broader search: (((( en science from ever ) OR ( del paciente book ever ))) OR ( del sciences hours ever )).
• Adding a wildcard symbol may retrieve word variants: (((("en science from ever") OR ("del paciente book ever"))) OR ("del sciences hours ever"))*.