Talvez deva tentar algumas variações de ortografia:
center nerve » cancer nerve (Expandir a Pesquisa), center nurse (Expandir a Pesquisa), letter nerve (Expandir a Pesquisa)
serum case » serum cause (Expandir a Pesquisa), serum casein (Expandir a Pesquisa), serum causes (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
can serum » can serve (Expandir a Pesquisa)
case does » cases does (Expandir a Pesquisa), cause does (Expandir a Pesquisa), case goes (Expandir a Pesquisa)
j center » j centner (Expandir a Pesquisa), j centeno (Expandir a Pesquisa), j cestero (Expandir a Pesquisa)
nerve en » nerve end (Expandir a Pesquisa), nerve aen (Expandir a Pesquisa), nerve ex (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case di (Expandir a Pesquisa), case dose (Expandir a Pesquisa)
en dis » en dios (Expandir a Pesquisa), en dias (Expandir a Pesquisa), en die (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (Expandir a Pesquisa)
a can » _ can (Expandir a Pesquisa), a cat (Expandir a Pesquisa), i can (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 center nerve en dis ) or ( a can serum case does ))) or ( j bent nerve case dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j center nerve en dis ) OR ( a can serum case does ))) OR ( j bent nerve case dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j center nerve en dis ) or ( a can serum case does ))) or ( j bent nerve case dis ))*.