Talvez deva tentar algumas variações de ortografia:
natl compared » nacl compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), acl compared (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
rat compared » rats compared (Expandir a Pesquisa), rate compared (Expandir a Pesquisa), fat compared (Expandir a Pesquisa)
knoop van » knoop jan (Expandir a Pesquisa), knoop hans (Expandir a Pesquisa), knoop ann (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
nt knoop » ann knoop (Expandir a Pesquisa), _ knoop (Expandir a Pesquisa), c knoop (Expandir a Pesquisa)
van ngoc » tran ngoc (Expandir a Pesquisa), vu ngoc (Expandir a Pesquisa), bao ngoc (Expandir a Pesquisa)
e natl » e natal (Expandir a Pesquisa), e nata (Expandir a Pesquisa), _ natl (Expandir a Pesquisa)
e rat » e rato (Expandir a Pesquisa), _ rat (Expandir a Pesquisa), a rat (Expandir a Pesquisa)
_ nt » _ wnt (Expandir a Pesquisa), _ ant (Expandir a Pesquisa), _ ent (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( e natl compared can netw ) OR ( e rat compared _ netb ))) OR ( _ nt knoop van ngoc ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( e natl compared can netw ) or ( e rat compared _ netb ))) or ( _ nt knoop van ngoc ))*.