Talvez deva tentar algumas variações de ortografia:
single compared » single complex (Expandir a Pesquisa), single compartment (Expandir a Pesquisa), single component (Expandir a Pesquisa)
compared leaf » compared law (Expandir a Pesquisa), compared less (Expandir a Pesquisa), compared near (Expandir a Pesquisa)
rail company » nail company (Expandir a Pesquisa), retail company (Expandir a Pesquisa), oil company (Expandir a Pesquisa)
company car » company case (Expandir a Pesquisa), company a (Expandir a Pesquisa), company carlos (Expandir a Pesquisa)
j single » j siegle (Expandir a Pesquisa), j singh (Expandir a Pesquisa), j singer (Expandir a Pesquisa)
leaf now » leaf no3 (Expandir a Pesquisa), leaf non (Expandir a Pesquisa), leaf nora (Expandir a Pesquisa)
car now » care now (Expandir a Pesquisa), car non (Expandir a Pesquisa), cpr now (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 car now ) OR ( j single compared leaf now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j rail company car now ) OR ( j single compared leaf now ))*.