Talvez deva tentar algumas variações de ortografia:
cost computer » joint computer (Expandir a Pesquisa), about computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer can (Expandir a Pesquisa)
natal complex » nata complex (Expandir a Pesquisa), nasal complex (Expandir a Pesquisa), natural complex (Expandir a Pesquisa)
complex than » complex trait (Expandir a Pesquisa)
rats compare » rats compared (Expandir a Pesquisa), rate compare (Expandir a Pesquisa), rates compared (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
_ natal » _ natural (Expandir a Pesquisa)
j cost » j costa (Expandir a Pesquisa), j coast (Expandir a Pesquisa), j colt (Expandir a Pesquisa)
j rats » j rath (Expandir a Pesquisa), j raes (Expandir a Pesquisa), rij rats (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 case now ) or ( _ natal complex than non ))) or ( j rats compare _ new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j cost computer case now ) OR ( _ natal complex than non ))) OR ( j rats compare _ new )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cost computer case now ) or ( _ natal complex than non ))) or ( j rats compare _ new ))*.