Talvez deva tentar algumas variações de ortografia:
unit computer » unit computed (Expandir a Pesquisa), units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa)
coated boron » coated iron (Expandir a Pesquisa), coated porous (Expandir a Pesquisa), based boron (Expandir a Pesquisa)
nart coated » nut coated (Expandir a Pesquisa), net coated (Expandir a Pesquisa), graft coated (Expandir a Pesquisa)
computer a » computer _ (Expandir a Pesquisa)
boron ngoc » horn ngoc (Expandir a Pesquisa)
comer can » omer can (Expandir a Pesquisa), comer dan (Expandir a Pesquisa), comes can (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
3 unit » _ unit (Expandir a Pesquisa), a unit (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (Expandir a Pesquisa)
j nair » _ nair (Expandir a Pesquisa), a nair (Expandir a Pesquisa), j nail (Expandir a Pesquisa)
j nart » _ nart (Expandir a Pesquisa), j nare (Expandir a Pesquisa), j narr (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: (((( 3 unit computer a netw ) or ( j nair comer can now ))) or ( j nart coated boron ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 3 unit computer a netw ) OR ( j nair comer can now ))) OR ( j nart coated boron ngoc )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 unit computer a netw ) or ( j nair comer can now ))) or ( j nart coated boron ngoc ))*.