Talvez deva tentar algumas variações de ortografia:
kolbe francis » kombe francis (Expandir a Pesquisa), kollie francis (Expandir a Pesquisa), cole francis (Expandir a Pesquisa)
rats compared » rates compared (Expandir a Pesquisa)
compared can » compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa), companies can (Expandir a Pesquisa)
francis netw » francis neat (Expandir a Pesquisa), francisco neto (Expandir a Pesquisa), francis newton (Expandir a Pesquisa)
new clamp » new class (Expandir a Pesquisa), new lamps (Expandir a Pesquisa), new clade (Expandir a Pesquisa)
clamp can » clamp a (Expandir a Pesquisa), clamp ar (Expandir a Pesquisa), clamp cum (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
l kolbe » h kolbe (Expandir a Pesquisa), _ kolbe (Expandir a Pesquisa), b kolbe (Expandir a Pesquisa)
j new » a new (Expandir a Pesquisa), _ new (Expandir a Pesquisa), 2 new (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: (((( _ rats compared can now ) OR ( j new clamp can new ))) OR ( j l kolbe francis netw ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ rats compared can now ) or ( j new clamp can new ))) or ( j l kolbe francis netw ))*.