Perhaps you should try some spelling variations:
"del paciente book over" » "del paciente con over", "de pacientes book over", "del docente book over", "del presente book over"
"les science food over" » "les science mad over", "les science vol over", "les sciences food over", "open science food over", "slow science food over"
"new science a over" » "les sciences a over", "open science a over", "how sciences a over", "new science _ over", "new science mad over", "new sciences _ over", "new science a ver"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("les science food over") OR ("del paciente book over"))) OR ("new science a over"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"les science food over\") OR (\"del paciente book over\"))) OR (\"new science a over\"))*".
• Removing quotes may allow a broader search: (((( les science food over ) OR ( del paciente book over ))) OR ( new science a over ))*.