Talvez deva tentar algumas variações de ortografia:
absent negative » absent native (Expandir a Pesquisa), absent negativity (Expandir a Pesquisa), patient negative (Expandir a Pesquisa)
negative cyst » negative cystic (Expandir a Pesquisa), negative chest (Expandir a Pesquisa), negative case (Expandir a Pesquisa)
nervous case » nervous cases (Expandir a Pesquisa), nervous age (Expandir a Pesquisa), nervous cancer (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), recent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa)
nerve cyst » nerve cystic (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
i central » coli central (Expandir a Pesquisa), hemi central (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
j absent » _ absent (Expandir a Pesquisa), 1 absent (Expandir a Pesquisa), l absent (Expandir a Pesquisa)
a cent » a cena (Expandir a Pesquisa), a cenp (Expandir a Pesquisa), a center (Expandir a Pesquisa)
cyst d » cyst _ (Expandir a Pesquisa), cyst a (Expandir a Pesquisa), cyst 2 (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 cent nerve cyst d ) or ( i central nervous case dis ))) or ( j absent negative cyst d ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a cent nerve cyst d ) OR ( i central nervous case dis ))) OR ( j absent negative cyst d )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a cent nerve cyst d ) or ( i central nervous case dis ))) or ( j absent negative cyst d ))*.