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

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 over") OR ("del science food over"))) OR ("new science book over"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"del science book over\") OR (\"del science food over\"))) OR (\"new science book over\"))".
• Removing quotes may allow a broader search: (((( del science book over ) OR ( del science food over ))) OR ( new science book over )).
• Adding a wildcard symbol may retrieve word variants: (((("del science book over") OR ("del science food over"))) OR ("new science book over"))*.