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"
"del science vol ever" » "del paciente vol ever", "del science food ever", "del science from ever"

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

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