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

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: "((\"en science book ever\") OR (((\"del sciences hours ever\") OR (\"del science from ever\"))))~".
• Removing quotes may allow a broader search: (( en science book ever ) OR ((( del sciences hours ever ) OR ( del science from ever ))))~.
• Adding a wildcard symbol may retrieve word variants: (("en science book ever") OR ((("del sciences hours ever") OR ("del science from ever"))))*.