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