Talvez deva tentar algumas variações de ortografia:
natour computer » nature computer (Expandir a Pesquisa), your computer (Expandir a Pesquisa), atom computer (Expandir a Pesquisa)
computer based » computer aided (Expandir a Pesquisa)
based netw » based new (Expandir a Pesquisa), based net (Expandir a Pesquisa), based next (Expandir a Pesquisa)
nail compr » nail compared (Expandir a Pesquisa), nail company (Expandir a Pesquisa), nail complex (Expandir a Pesquisa)
compr can » computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
j natour » j latour (Expandir a Pesquisa), al natour (Expandir a Pesquisa), el natour (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), cao ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
l comp » l comps (Expandir a Pesquisa), l como (Expandir a Pesquisa), l comper (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j natour computer based netw ) OR ( j l comp can netw ))) OR ( _ nail compr can ngoc ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j natour computer based netw ) or ( j l comp can netw ))) or ( _ nail compr can ngoc ))*.