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