Perhaps you should try some spelling variations:
"les sciences book over" » "les sciences hors over", "en sciences book over", "life sciences book over", "_ sciences book over", "les sciences book ver"
"open science food ever" » "en sciences food ever", "new science food ever", "open science from ever", "open science mad ever", "open science mind ever"
"del science book ever" » "del science from ever", "del science vol ever", "del paciente book ever"

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: "((((\"open science food ever\") OR (\"del science book ever\"))) OR (\"les sciences book over\"))~".
• Removing quotes may allow a broader search: (((( open science food ever ) OR ( del science book ever ))) OR ( les sciences book over ))~.
• Adding a wildcard symbol may retrieve word variants: (((("open science food ever") OR ("del science book ever"))) OR ("les sciences book over"))*.