Talvez deva tentar algumas variações de ortografia:
companies can » companies case (Expandir a Pesquisa), companies a (Expandir a Pesquisa), companies cut (Expandir a Pesquisa)
cortex cells » complex cells (Expandir a Pesquisa)
pal cortex » pial cortex (Expandir a Pesquisa), a cortex (Expandir a Pesquisa), del cortex (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
com can » com cana (Expandir a Pesquisa), com cant (Expandir a Pesquisa), com cal (Expandir a Pesquisa)
can how » can show (Expandir a Pesquisa), man how (Expandir a Pesquisa), can home (Expandir a Pesquisa)
l com » l como (Expandir a Pesquisa), e com (Expandir a Pesquisa), l con (Expandir a Pesquisa)
5 pal » 5 palm (Expandir a Pesquisa), _ pal (Expandir a Pesquisa), k pal (Expandir a Pesquisa)
3 oil » 3 oils (Expandir a Pesquisa), _ oil (Expandir a Pesquisa), l oil (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 l com can newts ) OR ((( 5 pal cortex cells new ) OR ( 3 oil companies can how ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l com can newts ) OR ((( 5 pal cortex cells new ) OR ( 3 oil companies can how ))))*.