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 chest (Expandir a Pesquisa), negative cis (Expandir a Pesquisa), negative case (Expandir a Pesquisa)
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
absent nerve » bent nerve (Expandir a Pesquisa), abducent nerve (Expandir a Pesquisa), absent native (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
17 absent » _ absent (Expandir a Pesquisa), c1 absent (Expandir a Pesquisa), eo absent (Expandir a Pesquisa)
j absent » _ absent (Expandir a Pesquisa), l absent (Expandir a Pesquisa), c1 absent (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa)
cat dis » 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: (( _ center nerve cat dis ) OR ((( j absent negative cyst dis ) OR ( 17 absent nerve cat dis ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( _ center nerve cat dis ) OR ((( j absent negative cyst dis ) OR ( 17 absent nerve cat dis ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ center nerve cat dis ) OR ((( j absent negative cyst dis ) OR ( 17 absent nerve cat dis ))))*.