Talvez deva tentar algumas variações de ortografia:
unit computer » units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa), ut computer (Expandir a Pesquisa)
coated boron » coated iron (Expandir a Pesquisa), coated porous (Expandir a Pesquisa), coated bone (Expandir a Pesquisa)
nart coated » net coated (Expandir a Pesquisa), graft coated (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j unit » _ unit (Expandir a Pesquisa), a unit (Expandir a Pesquisa), 3 unit (Expandir a Pesquisa)
a neta » a neto (Expandir a Pesquisa), a nectar (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nare (Expandir a Pesquisa)
j nart » _ nart (Expandir a Pesquisa), j nare (Expandir a Pesquisa), c nart (Expandir a Pesquisa)
ngoc » ngo (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 unit computer a neta ) or ( j narr compr can now ))) or ( j nart coated boron ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j unit computer a neta ) OR ( j narr compr can now ))) OR ( j nart coated boron ngoc )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j unit computer a neta ) or ( j narr compr can now ))) or ( j nart coated boron ngoc ))*.