Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
nerves system » nerven system (Expandir a Pesquisa), nervous system (Expandir a Pesquisa), nerven systems (Expandir a Pesquisa)
nerve system » nervous 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)
dell nerves » cells nerves (Expandir a Pesquisa), cell nerve (Expandir a Pesquisa), help nerves (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system dds (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa), hemi central (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa), cyst dna (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa)
j dell » j della (Expandir a Pesquisa), j delp (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 crest nerve cyst dis ) or ( i central nerve system dis ))) or ( j dell nerves system dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i crest nerve cyst dis ) OR ( i central nerve system dis ))) OR ( j dell nerves system dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i crest nerve cyst dis ) or ( i central nerve system dis ))) or ( j dell nerves system dis ))*.