Talvez deva tentar algumas variações de ortografia:
compared boron » coated boron (Expandir a Pesquisa), combined boron (Expandir a Pesquisa), colored boron (Expandir a Pesquisa)
unit computer » unit computed (Expandir a Pesquisa), units computers (Expandir a Pesquisa), tunis computer (Expandir a Pesquisa)
narr compared » nmr compared (Expandir a Pesquisa), laser compared (Expandir a Pesquisa), water compared (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 » a unit (Expandir a Pesquisa)
a nair » a nail (Expandir a Pesquisa)
j narr » l narr (Expandir a Pesquisa), j nair (Expandir a Pesquisa), j nare (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 neto ) or ( a nair comer can now ))) or ( j narr compared boron ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( 3 unit computer a neto ) OR ( a nair comer can now ))) OR ( j narr compared boron ngoc )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( 3 unit computer a neto ) or ( a nair comer can now ))) or ( j narr compared boron ngoc ))*.