Talvez deva tentar algumas variações de ortografia:
drusen does » drusen des (Expandir a Pesquisa), viruses does (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
mejia nerve » mejia narvaez (Expandir a Pesquisa)
benito eva » benito a (Expandir a Pesquisa)
eva drusen » nerve drusen (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
case goes » care goes (Expandir a Pesquisa), age goes (Expandir a Pesquisa), jose goes (Expandir a Pesquisa)
j benito » j benitez (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa)
cat dis » cat diets (Expandir a Pesquisa), cat diet (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 crest nerve cat dis ) OR ((( j benito eva drusen does ) OR ( j mejia nerve case goes ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i crest nerve cat dis ) OR ((( j benito eva drusen does ) OR ( j mejia nerve case goes ))))*.