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"
"del science book ver" » "del science food ver", "del science from ver", "del science book new"
"new science vol over" » "les sciences vol over", "open science vol over", "new science food over", "new science from over", "new science all over"

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