Talvez deva tentar algumas variações de ortografia:
direct neural » direct neuronal (Expandir a Pesquisa), direct peroral (Expandir a Pesquisa), direct oral (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
dental nerve » mental nerve (Expandir a Pesquisa), ventral nerve (Expandir a Pesquisa), pudendal nerve (Expandir a Pesquisa)
nerve cut » nerve cat (Expandir a Pesquisa), nerve cuff (Expandir a Pesquisa), nerve cyst (Expandir a Pesquisa)
crest due » rest due (Expandir a Pesquisa), crest de (Expandir a Pesquisa), arrest due (Expandir a Pesquisa)
j dental » j dent (Expandir a Pesquisa), j delta (Expandir a Pesquisa), j deal (Expandir a Pesquisa)
j direct » j director (Expandir a Pesquisa), nhj direct (Expandir a Pesquisa)
cut dis » cut disk (Expandir a Pesquisa), cut discs (Expandir a Pesquisa), cut dian (Expandir a Pesquisa)
cut due » cuti due (Expandir a Pesquisa), gut due (Expandir a Pesquisa), out due (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: (( a central nerve cut dis ) or ((( j dental nerve cut due ) or ( j direct neural crest due ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a central nerve cut dis ) OR ((( j dental nerve cut due ) OR ( j direct neural crest due )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a central nerve cut dis ) or ((( j dental nerve cut due ) or ( j direct neural crest due ))))*.