Talvez deva tentar algumas variações de ortografia:
model compared » model compound (Expandir a Pesquisa), model combined (Expandir a Pesquisa), model complex (Expandir a Pesquisa)
heard compare » heart compared (Expandir a Pesquisa), head compared (Expandir a Pesquisa), hard compared (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa)
compare a » compare _ (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
j heard » j head (Expandir a Pesquisa), j heyward (Expandir a Pesquisa)
nab amp » ab amp (Expandir a Pesquisa), cab amp (Expandir a Pesquisa), nb amp (Expandir a Pesquisa)
amp can » amp camp (Expandir a Pesquisa)
a neta » a neto (Expandir a Pesquisa), a nectar (Expandir a Pesquisa)
_ nab » _ nad (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: (((( _ model compared a neta ) OR ( j heard compare a new ))) OR ( _ nab amp can newts ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ model compared a neta ) or ( j heard compare a new ))) or ( _ nab amp can newts ))*.