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 ver" » "new science from ver", "new science vol ver", "les sciences book ver", "open science book ver", "new science book new"
"en science food ver" » "en science from ver", "en science mad ver", "en science mind ver", "en sciences food ver", "open science food ver", "dna science food ver"

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 ver\") OR (\"new science book ver\"))) OR (\"en science food ver\"))~".
• Removing quotes may allow a broader search: (((( del science book ver ) OR ( new science book ver ))) OR ( en science food ver ))~.
• Adding a wildcard symbol may retrieve word variants: (((("del science book ver") OR ("new science book ver"))) OR ("en science food ver"))*.