Talvez deva tentar algumas variações de ortografia:
ventral nerve » femoral nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
nerve cyst » nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
1 ventral » _ ventral (Expandir a Pesquisa), a ventral (Expandir a Pesquisa), 2 ventral (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), i cena (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (((( i cent nerve system dis ) or ( i crest nerve cyst dis ))) or ( 1 ventral nerve cyst due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i cent nerve system dis ) OR ( i crest nerve cyst dis ))) OR ( 1 ventral nerve cyst due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i cent nerve system dis ) or ( i crest nerve cyst dis ))) or ( 1 ventral nerve cyst due ))*.