Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
ii ventral » i ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
nevi cyst » nevi case (Expandir a Pesquisa), nevi cns (Expandir a Pesquisa)
j benign » j benigno (Expandir a Pesquisa), a benign (Expandir a Pesquisa), 1 benign (Expandir a Pesquisa)
eye can » eye care (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (Expandir a Pesquisa)
cyst d » cyst _ (Expandir a Pesquisa), cyst a (Expandir a Pesquisa), cyst e (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j central nerve system dcs ) OR ( ii ventral eye can dcs ))) OR ( j benign nevi cyst d ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j central nerve system dcs ) or ( ii ventral eye can dcs ))) or ( j benign nevi cyst d ))*.