Talvez deva tentar algumas variações de ortografia:
fatigue compelling » fatigue comparing (Expandir a Pesquisa), fatigue complaint (Expandir a Pesquisa), fatigue modelling (Expandir a Pesquisa)
compelling cases » compelling case (Expandir a Pesquisa), compelling cause (Expandir a Pesquisa), competing causes (Expandir a Pesquisa)
oil company » oil companies (Expandir a Pesquisa)
company car » company case (Expandir a Pesquisa), company a (Expandir a Pesquisa), company carlos (Expandir a Pesquisa)
a fatigue » _ fatigue (Expandir a Pesquisa), a fatiga (Expandir a Pesquisa)
cases now » cases new (Expandir a Pesquisa), cases non (Expandir a Pesquisa), case now (Expandir a Pesquisa)
car now » care now (Expandir a Pesquisa), car non (Expandir a Pesquisa), cpr now (Expandir a Pesquisa)
j oil » _ oil (Expandir a Pesquisa), l oil (Expandir a Pesquisa), i oil (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( j oil company car now ) or ( a fatigue compelling cases now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j oil company car now ) OR ( a fatigue compelling cases now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j oil company car now ) or ( a fatigue compelling cases now ))*.