Perhaps you should try some spelling variations:
"en sciences book ever" » "en science food ever", "en sciences hors ever", "les sciences book ever", "_ sciences book ever", "open science book ever"
"life sciences book ever" » "life science food ever", "life sciences hors ever"
"del science book ever" » "del science food ever", "del science from ever", "del science vol ever", "del paciente book 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 sciences book ever\") OR (\"del science book ever\"))) OR (\"life sciences book ever\"))~".
• Removing quotes may allow a broader search: (((( en sciences book ever ) OR ( del science book ever ))) OR ( life sciences book ever ))~.
• Adding a wildcard symbol may retrieve word variants: (((("en sciences book ever") OR ("del science book ever"))) OR ("life sciences book ever"))*.