Talvez deva tentar algumas variações de ortografia:
cancer inter » cancer interim (Expandir a Pesquisa), cancer center (Expandir a Pesquisa), cancer index (Expandir a Pesquisa)
canal cancer » anal cancer (Expandir a Pesquisa), renal cancer (Expandir a Pesquisa), central cancer (Expandir a Pesquisa)
inter monogr » inter monomer (Expandir a Pesquisa), inter motor (Expandir a Pesquisa), inter monsoon (Expandir a Pesquisa)
nat cancer » natl cancer (Expandir a Pesquisa), rat cancer (Expandir a Pesquisa), fat cancer (Expandir a Pesquisa)
cancer int » cancer intra (Expandir a Pesquisa), cancer inca (Expandir a Pesquisa), cancer index (Expandir a Pesquisa)
int monogr » being monogr (Expandir a Pesquisa)
eat cancer » beat cancer (Expandir a Pesquisa), east cancer (Expandir a Pesquisa), et cancer (Expandir a Pesquisa)
_ canal » _ canada (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), j nay (Expandir a Pesquisa)
j eat » j east (Expandir a Pesquisa), _ eat (Expandir a Pesquisa), i eat (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 nat cancer int monogr ) or ( j eat cancer int monogr ))) or ( _ canal cancer inter monogr ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nat cancer int monogr ) OR ( j eat cancer int monogr ))) OR ( _ canal cancer inter monogr )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat cancer int monogr ) or ( j eat cancer int monogr ))) or ( _ canal cancer inter monogr ))*.