Talvez deva tentar algumas variações de ortografia:
aids computers » minds computers (Expandir a Pesquisa), brains computers (Expandir a Pesquisa), radios computers (Expandir a Pesquisa)
computers can » computers a (Expandir a Pesquisa), computers _ (Expandir a Pesquisa)
nail camp » nail lamp (Expandir a Pesquisa), nail case (Expandir a Pesquisa), nail can (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), cao ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
kno can » know can (Expandir a Pesquisa), knots can (Expandir a Pesquisa), khoo can (Expandir a Pesquisa)
mj aids » m aids (Expandir a Pesquisa)
3 nacl » _ nacl (Expandir a Pesquisa), 3.5 nacl (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: (((( _ nail camp can ngoc ) or ( 3 nacl kno can ngoc ))) or ( mj aids computers can ngoc ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ nail camp can ngoc ) OR ( 3 nacl kno can ngoc ))) OR ( mj aids computers can ngoc )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ nail camp can ngoc ) or ( 3 nacl kno can ngoc ))) or ( mj aids computers can ngoc ))*.