Talvez deva tentar algumas variações de ortografia:
cancer serves » cancer series (Expandir a Pesquisa), cancer services (Expandir a Pesquisa), cancer surveys (Expandir a Pesquisa)
dental nerve » mental nerve (Expandir a Pesquisa), ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
can nervous » a nervous (Expandir a Pesquisa), non nervous (Expandir a Pesquisa), any nervous (Expandir a Pesquisa)
serves case » series case (Expandir a Pesquisa), nerves case (Expandir a Pesquisa), services case (Expandir a Pesquisa)
system due » system der (Expandir a Pesquisa)
nerve man » nerve mean (Expandir a Pesquisa), nerve may (Expandir a Pesquisa), nerve mast (Expandir a Pesquisa)
j cancer » j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa), j candel (Expandir a Pesquisa)
case dis » case disc (Expandir a Pesquisa), case did (Expandir a Pesquisa), case di (Expandir a Pesquisa)
j dental » j dent (Expandir a Pesquisa), j delta (Expandir a Pesquisa), j deal (Expandir a Pesquisa)
man due » woman due (Expandir a Pesquisa), man deuk (Expandir a Pesquisa)
j can » j cano (Expandir a Pesquisa), j cant (Expandir a Pesquisa), _ 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 can nervous system due ) or ( j cancer serves case dis ))) or ( j dental nerve man due ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j can nervous system due ) OR ( j cancer serves case dis ))) OR ( j dental nerve man due )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j can nervous system due ) or ( j cancer serves case dis ))) or ( j dental nerve man due ))*.