Perhaps you should try some spelling variations:
best science » les sciences, new science
science book » science vol
del paciente » de pacientes, del docente, del presente
paciente mad » paciente con, science mad
evera » vera, every, ever
severa » svera, severy, sever, several, severe
very » 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 ((evera OR severa) OR (evera OR severa)) ) OR ( del paciente mad very ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( best science book ((evera OR severa) OR (evera OR severa)) ) OR ( del paciente mad very ))".
• Adding a wildcard symbol may retrieve word variants: (( best science book ((evera OR severa) OR (evera OR severa)) ) OR ( del paciente mad very ))*.