Talvez deva tentar algumas variações de ortografia:
crest derived » host derived (Expandir a Pesquisa)
spinal nerve » retinal nerve (Expandir a Pesquisa)
derived bar » derived bac (Expandir a Pesquisa), derived bak (Expandir a Pesquisa), derived bat (Expandir a Pesquisa)
system dan » system data (Expandir a Pesquisa), system dias (Expandir a Pesquisa), system der (Expandir a Pesquisa)
current w » current work (Expandir a Pesquisa), current when (Expandir a Pesquisa)
bar diet » bark diet (Expandir a Pesquisa), bear diet (Expandir a Pesquisa), war diet (Expandir a Pesquisa)
w system » new system (Expandir a Pesquisa), w systemie (Expandir a Pesquisa), law system (Expandir a Pesquisa)
j spinal » _ spinal (Expandir a Pesquisa), a spinal (Expandir a Pesquisa), 1 spinal (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case does (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i crest derived bar diet ) OR ( i current w system dan ))) OR ( j spinal nerve case dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i crest derived bar diet ) or ( i current w system dan ))) or ( j spinal nerve case dis ))*.