Talvez deva tentar algumas variações de ortografia:
center pulse » counter pulse (Expandir a Pesquisa), center phase (Expandir a Pesquisa), inter pulse (Expandir a Pesquisa)
pulse system » base system (Expandir a Pesquisa), mouse system (Expandir a Pesquisa), case system (Expandir a Pesquisa)
absent nerve » abducent nerve (Expandir a Pesquisa), augment nerve (Expandir a Pesquisa), absent native (Expandir a Pesquisa)
system dias » system dan (Expandir a Pesquisa), system dcs (Expandir a Pesquisa), system dcus (Expandir a Pesquisa)
bent nerve » mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa), benign nerve (Expandir a Pesquisa)
nerve cyst » nerve cat (Expandir a Pesquisa), nerve system (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
a center » a century (Expandir a Pesquisa)
_ absent » _ absence (Expandir a Pesquisa)
i bent » i benth (Expandir a Pesquisa), i benet (Expandir a Pesquisa), i bento (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 bent nerve cyst dis ) or ( a center pulse system dias ))) or ( _ absent nerve case due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( i bent nerve cyst dis ) OR ( a center pulse system dias ))) OR ( _ absent nerve case due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i bent nerve cyst dis ) or ( a center pulse system dias ))) or ( _ absent nerve case due ))*.