Talvez deva tentar algumas variações de ortografia:
central nerve » ventral nerve (Expandir a Pesquisa), central nervous (Expandir a Pesquisa), central neural (Expandir a Pesquisa)
cranial nerve » facial nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
valve cyst » valve cusp (Expandir a Pesquisa), valve case (Expandir a Pesquisa), valve ct (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j mehta » a mehta (Expandir a Pesquisa), _ mehta (Expandir a Pesquisa), k mehta (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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: (((( j mehta valve cyst due ) or ( i central nerve cat dis ))) or ( _ cranial nerve system dcs ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j mehta valve cyst due ) OR ( i central nerve cat dis ))) OR ( _ cranial nerve system dcs )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j mehta valve cyst due ) or ( i central nerve cat dis ))) or ( _ cranial nerve system dcs ))*.