Talvez deva tentar algumas variações de ortografia:
computer phones » computer phone (Expandir a Pesquisa), computer pronrs (Expandir a Pesquisa), computer process (Expandir a Pesquisa)
level compared » levels compared (Expandir a Pesquisa), model compared (Expandir a Pesquisa), level comparison (Expandir a Pesquisa)
compared cause » compared case (Expandir a Pesquisa), compared cases (Expandir a Pesquisa), complex cause (Expandir a Pesquisa)
cost computer » joint computer (Expandir a Pesquisa), about computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa)
heat compared » heart compared (Expandir a Pesquisa), meat compared (Expandir a Pesquisa), health compared (Expandir a Pesquisa)
phones non » phones do (Expandir a Pesquisa), phones among (Expandir a Pesquisa)
cause non » causes non (Expandir a Pesquisa)
j cost » j costa (Expandir a Pesquisa), j coast (Expandir a Pesquisa), j colt (Expandir a Pesquisa)
j heat » j heath (Expandir a Pesquisa), j head (Expandir a Pesquisa), j heap (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 cost computer phones non ) or ((( _ level compared cause non ) or ( j heat compared _ non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j cost computer phones non ) OR ((( _ level compared cause non ) OR ( j heat compared _ non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j cost computer phones non ) or ((( _ level compared cause non ) or ( j heat compared _ non ))))*.