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

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