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