Talvez deva tentar algumas variações de ortografia:
cancer compared » cancer comparison (Expandir a Pesquisa)
days compared » assays compared (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compared can (Expandir a Pesquisa), companies case (Expandir a Pesquisa)
ago compared » age compared (Expandir a Pesquisa), agar compared (Expandir a Pesquisa), faso compared (Expandir a Pesquisa)
compared a » compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
case new » cases new (Expandir a Pesquisa), cause new (Expandir a Pesquisa), caste new (Expandir a Pesquisa)
j cancer » j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa), j candel (Expandir a Pesquisa)
j days » j davys (Expandir a Pesquisa), j daas (Expandir a Pesquisa)
_ ago » _ ago2 (Expandir a Pesquisa), _ age (Expandir a Pesquisa), _ agr (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 days compared case new ) or ((( _ ago compared _ netw ) or ( j cancer compared a new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j days compared case new ) OR ((( _ ago compared _ netw ) OR ( j cancer compared a new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j days compared case new ) or ((( _ ago compared _ netw ) or ( j cancer compared a new ))))*.