Perhaps you should try some spelling variations:
"del paciente book ver" » "del paciente con ver", "del presente book ver", "del ambiente book ver", "del paciente book new"
"best science book ver" » "del science book ver", "les sciences book ver", "art science book ver", "best science food ver", "best science from ver", "best science book new"
"new science vol ver" » "del science vol ver", "les sciences vol ver", "open science vol ver", "new science food ver", "new science from ver"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("best science book ver") OR ("new science vol ver"))) OR ("del paciente book ver"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"best science book ver\") OR (\"new science vol ver\"))) OR (\"del paciente book ver\"))".
• Removing quotes may allow a broader search: (((( best science book ver ) OR ( new science vol ver ))) OR ( del paciente book ver )).
• Adding a wildcard symbol may retrieve word variants: (((("best science book ver") OR ("new science vol ver"))) OR ("del paciente book ver"))*.