Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
complex care » complex case (Expandir a Pesquisa)
company case » company based (Expandir a Pesquisa), company a (Expandir a Pesquisa)
oil company » oil companies (Expandir a Pesquisa)
comes can » homes can (Expandir a Pesquisa), domes can (Expandir a Pesquisa), comes carne (Expandir a Pesquisa)
care need » care needs (Expandir a Pesquisa)
al comes » all comes (Expandir a Pesquisa), al comer (Expandir a Pesquisa), al comps (Expandir a Pesquisa)
case now » cases now (Expandir a Pesquisa), case non (Expandir a Pesquisa), case new (Expandir a Pesquisa)
l oil » _ oil (Expandir a Pesquisa)
j al » j a (Expandir a Pesquisa), j l (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 al comes can new ) OR ((( 3 methyl complex care need ) OR ( l oil company case now ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j al comes can new ) OR ((( 3 methyl complex care need ) OR ( l oil company case now ))))*.