Talvez deva tentar algumas variações de ortografia:
compared less » comparee les (Expandir a Pesquisa), comparer les (Expandir a Pesquisa), compared leaf (Expandir a Pesquisa)
ml compared » gel compared (Expandir a Pesquisa), model compared (Expandir a Pesquisa), tool compared (Expandir a Pesquisa)
nat comp » nat comm (Expandir a Pesquisa), et comp (Expandir a Pesquisa), nat cov (Expandir a Pesquisa)
comp can » chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa), comp la (Expandir a Pesquisa)
less new » loss new (Expandir a Pesquisa), less now (Expandir a Pesquisa), liss new (Expandir a Pesquisa)
nat camp » fat camp (Expandir a Pesquisa), cpt camp (Expandir a Pesquisa), a1 camp (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
can netw » can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa), can now (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a nat (Expandir a Pesquisa)
_ ml » _ aml (Expandir a Pesquisa), _ pml (Expandir a Pesquisa), _ cml (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j nat comp can new ) OR ( _ ml compared less new ))) OR ( j nat camp can netw ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nat comp can new ) OR ( _ ml compared less new ))) OR ( j nat camp can netw ))*.