Talvez deva tentar algumas variações de ortografia:
heads compared » head compared (Expandir a Pesquisa), herds compared (Expandir a Pesquisa), seeds compared (Expandir a Pesquisa)
nat computers » what computers (Expandir a Pesquisa), iet computers (Expandir a Pesquisa), can computers (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
nat compared » fat compared (Expandir a Pesquisa), rat compared (Expandir a Pesquisa), cat compared (Expandir a Pesquisa)
compared law » compared a (Expandir a Pesquisa), compared _ (Expandir a Pesquisa), company law (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared cases (Expandir a Pesquisa)
law needs » law need (Expandir a Pesquisa), plow needs (Expandir a Pesquisa), a needs (Expandir a Pesquisa)
j heads » j head (Expandir a Pesquisa), j headd (Expandir a Pesquisa), j heales (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (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 compared law needs ) or ( j heads compared can now ))) or ( j nat computers can new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j nat compared law needs ) OR ( j heads compared can now ))) OR ( j nat computers can new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat compared law needs ) or ( j heads compared can now ))) or ( j nat computers can new ))*.