Perhaps you should try some spelling variations:
"del science book ever" » "del science food ever", "del science from ever", "del paciente book ever"
"best science book over" » "best science food over", "best science from over", "les sciences book over", "art science book over", "et sciences book over", "best science book ver"
"new science vol ever" » "les sciences vol ever", "open science vol ever", "new science food ever", "new 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: (((("del science book ever") OR ("new science vol ever"))) OR ("best science book over"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"del science book ever\") OR (\"new science vol ever\"))) OR (\"best science book over\"))".
• Removing quotes may allow a broader search: (((( del science book ever ) OR ( new science vol ever ))) OR ( best science book over )).
• Adding a wildcard symbol may retrieve word variants: (((("del science book ever") OR ("new science vol ever"))) OR ("best science book over"))*.