Talvez deva tentar algumas variações de ortografia:
comparing causes » comparing cases (Expandir a Pesquisa), competing causes (Expandir a Pesquisa), comparing case (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
all comparing » al comparing (Expandir a Pesquisa), ill comparing (Expandir a Pesquisa), small comparing (Expandir a Pesquisa)
earl compared » early compared (Expandir a Pesquisa), meal compared (Expandir a Pesquisa), al compared (Expandir a Pesquisa)
compared thaw » compared law (Expandir a Pesquisa), compared three (Expandir a Pesquisa), comparing thaw (Expandir a Pesquisa)
a computers » a computer's (Expandir a Pesquisa), a computer (Expandir a Pesquisa), _ computers (Expandir a Pesquisa)
thaw non » law non (Expandir a Pesquisa), thaw zin (Expandir a Pesquisa)
a earl » h earl (Expandir a Pesquisa), l earl (Expandir a Pesquisa)
3 all » 3 alcl (Expandir a Pesquisa), 3 ally (Expandir a Pesquisa), _ all (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 a computers can new ) or ((( 3 all comparing causes non ) or ( a earl compared thaw non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j a computers can new ) OR ((( 3 all comparing causes non ) OR ( a earl compared thaw non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j a computers can new ) or ((( 3 all comparing causes non ) or ( a earl compared thaw non ))))*.