Talvez deva tentar algumas variações de ortografia:
benitez narvaez » benito narvaez (Expandir a Pesquisa), benitez alvarez (Expandir a Pesquisa), benitez nara (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
narvaez age » narvaez ana (Expandir a Pesquisa), narvaez a (Expandir a Pesquisa), narvaez g (Expandir a Pesquisa)
mejia nerve » mejia narvaez (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa)
j benitez » f benitez (Expandir a Pesquisa), a benitez (Expandir a Pesquisa)
nerve age » nerve agent (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve area (Expandir a Pesquisa)
age does » age de (Expandir a Pesquisa)
age goes » de goes (Expandir a Pesquisa), age got (Expandir a Pesquisa), e goes (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( i central nerve _ dis ) OR ((( j benitez narvaez age does ) OR ( j mejia nerve age goes ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i central nerve _ dis ) OR ((( j benitez narvaez age does ) OR ( j mejia nerve age goes ))))*.