Talvez deva tentar algumas variações de ortografia:
central natural » central neural (Expandir a Pesquisa), general natural (Expandir a Pesquisa), centre natural (Expandir a Pesquisa)
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
absent nerve » bent nerve (Expandir a Pesquisa), abducent nerve (Expandir a Pesquisa), augment nerve (Expandir a Pesquisa)
natural van » natural vai (Expandir a Pesquisa), natural vale (Expandir a Pesquisa), natural vs (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa), hemi central (Expandir a Pesquisa)
j central » 1hfj central (Expandir a Pesquisa)
nerve can » merve can (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa), nerve cn (Expandir a Pesquisa)
l absent » _ absent (Expandir a Pesquisa), 17 absent (Expandir a Pesquisa), c1 absent (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
van dis » van die (Expandir a Pesquisa), van diest (Expandir a Pesquisa), van dijk (Expandir a Pesquisa)
can dis » can die (Expandir a Pesquisa), can dcs (Expandir a Pesquisa), can dig (Expandir a Pesquisa)
a due » _ due (Expandir a Pesquisa), a dye (Expandir a Pesquisa), i 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: (((( i central nerve a due ) or ( j central natural van dis ))) or ( l absent nerve can dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i central nerve a due ) OR ( j central natural van dis ))) OR ( l absent nerve can dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i central nerve a due ) or ( j central natural van dis ))) or ( l absent nerve can dis ))*.