Talvez deva tentar algumas variações de ortografia:
allergy compared » allergy care (Expandir a Pesquisa), allergy cmpa (Expandir a Pesquisa)
compared case » compared cases (Expandir a Pesquisa), compare care (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
rail company » nail company (Expandir a Pesquisa), retail company (Expandir a Pesquisa), oil company (Expandir a Pesquisa)
company cars » company car (Expandir a Pesquisa), company carlos (Expandir a Pesquisa), company case (Expandir a Pesquisa)
j allergy » _ allergy (Expandir a Pesquisa), i allergy (Expandir a Pesquisa), 1 allergy (Expandir a Pesquisa)
cars new » wars new (Expandir a Pesquisa), mars new (Expandir a Pesquisa), care's new (Expandir a Pesquisa)
case non » cause non (Expandir a Pesquisa), case note (Expandir a Pesquisa), use non (Expandir a Pesquisa)
j rail » j radl (Expandir a Pesquisa), j raal (Expandir a Pesquisa), j rael (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 rail company cars new ) OR ( j allergy compared case non ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j rail company cars new ) OR ( j allergy compared case non ))*.