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

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

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