Talvez deva tentar algumas variações de ortografia:
computer based » computer aided (Expandir a Pesquisa)
nails compared » fails compared (Expandir a Pesquisa), nail compared (Expandir a Pesquisa), aids compared (Expandir a Pesquisa)
dal computer » small computer (Expandir a Pesquisa), local computer (Expandir a Pesquisa), vhdl computer (Expandir a Pesquisa)
rat compared » rats compared (Expandir a Pesquisa), rate compared (Expandir a Pesquisa), rates compared (Expandir a Pesquisa)
based snow » based snp (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa), compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
j nails » _ nails (Expandir a Pesquisa), j nail (Expandir a Pesquisa), do nails (Expandir a Pesquisa)
a dal » a day (Expandir a Pesquisa), a del (Expandir a Pesquisa), a dam (Expandir a Pesquisa)
a now » a nowe (Expandir a Pesquisa), a new (Expandir a Pesquisa), a non (Expandir a Pesquisa)
j rat » j rath (Expandir a Pesquisa), _ rat (Expandir a Pesquisa), a rat (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: (( a dal computer based snow ) or ((( j nails compared a now ) or ( j rat compared a now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a dal computer based snow ) OR ((( j nails compared a now ) OR ( j rat compared a now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a dal computer based snow ) or ((( j nails compared a now ) or ( j rat compared a now ))))*.