Talvez deva tentar algumas variações de ortografia:
health compared » health comparison (Expandir a Pesquisa), health component (Expandir a Pesquisa)
compared based » compared case (Expandir a Pesquisa), compared cases (Expandir a Pesquisa), compares bases (Expandir a Pesquisa)
comas juan » tomas juan (Expandir a Pesquisa), casas juan (Expandir a Pesquisa), rojas juan (Expandir a Pesquisa)
combe can » combe juan (Expandir a Pesquisa), combe jean (Expandir a Pesquisa), combe c (Expandir a Pesquisa)
juan netw » juan nieto (Expandir a Pesquisa), juan neri (Expandir a Pesquisa)
based new » based next (Expandir a Pesquisa), based near (Expandir a Pesquisa), based n (Expandir a Pesquisa)
la comas » la coma (Expandir a Pesquisa), la comes (Expandir a Pesquisa), la como (Expandir a Pesquisa)
j health » j heath (Expandir a Pesquisa), bmj health (Expandir a Pesquisa)
j la » j a (Expandir a Pesquisa), j l (Expandir a Pesquisa), j da (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 la combe can new ) or ( j la comas juan netw ))) or ( j health compared based new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j la combe can new ) OR ( j la comas juan netw ))) OR ( j health compared based new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j la combe can new ) or ( j la comas juan netw ))) or ( j health compared based new ))*.