Perhaps you should try some spelling variations:
"del science book ever" » "del science food ever", "del science vol ever", "del paciente book ever"
"open science book over" » "open science food over", "open science vol over", "en sciences book over", "open science book ver"
"new science from ever" » "new science food ever", "new science vol ever", "les sciences from ever", "new science from her"

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: "((((\"del science book ever\") OR (\"new science from ever\"))) OR (\"open science book over\"))~".
• Removing quotes may allow a broader search: (((( del science book ever ) OR ( new science from ever ))) OR ( open science book over ))~.
• Adding a wildcard symbol may retrieve word variants: (((("del science book ever") OR ("new science from ever"))) OR ("open science book over"))*.