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