Talvez deva tentar algumas variações de ortografia:
costs compared » counts compared (Expandir a Pesquisa), tests compared (Expandir a Pesquisa), costs comparing (Expandir a Pesquisa)
cast compared » cost compared (Expandir a Pesquisa), cases compared (Expandir a Pesquisa), test compared (Expandir a Pesquisa)
compared van » compared can (Expandir a Pesquisa), compared law (Expandir a Pesquisa), compare avian (Expandir a Pesquisa)
nat computer » cat computer (Expandir a Pesquisa), fast computer (Expandir a Pesquisa), unit computer (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
van ngoc » tran ngoc (Expandir a Pesquisa), vu ngoc (Expandir a Pesquisa)
c costs » c costa (Expandir a Pesquisa), a costs (Expandir a Pesquisa), c cost (Expandir a Pesquisa)
c cast » c case (Expandir a Pesquisa), c caat (Expandir a Pesquisa), c casa (Expandir a Pesquisa)
a ngoc » ha ngoc (Expandir a Pesquisa), ta ngoc (Expandir a Pesquisa), la ngoc (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (Expandir a Pesquisa)
_ nat » _ net (Expandir a Pesquisa), _ nad (Expandir a Pesquisa), _ nac (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: (((( c cast compared a ngoc ) or ( c costs compared van ngoc ))) or ( _ nat computer a netw ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( c cast compared a ngoc ) OR ( c costs compared van ngoc ))) OR ( _ nat computer a netw )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( c cast compared a ngoc ) or ( c costs compared van ngoc ))) or ( _ nat computer a netw ))*.