Talvez deva tentar algumas variações de ortografia:
complex causes » complex case (Expandir a Pesquisa), complex care (Expandir a Pesquisa)
nucl complex » nacl complex (Expandir a Pesquisa), nsl complex (Expandir a Pesquisa), cl complex (Expandir a Pesquisa)
company cada » company case (Expandir a Pesquisa), company data (Expandir a Pesquisa), company car (Expandir a Pesquisa)
sommers dan » sommer dan (Expandir a Pesquisa), sommers jan (Expandir a Pesquisa), summers dan (Expandir a Pesquisa)
oil company » oil companies (Expandir a Pesquisa)
dan newton » jan newton (Expandir a Pesquisa), jean newton (Expandir a Pesquisa), chan newton (Expandir a Pesquisa)
causes non » cause non (Expandir a Pesquisa)
3 nucl » 3 null (Expandir a Pesquisa)
da oil » dha oil (Expandir a Pesquisa), da oit (Expandir a Pesquisa), da oim (Expandir a Pesquisa)
cada n » cada sn (Expandir a Pesquisa), cada _ (Expandir a Pesquisa), cada a (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 _ sommers dan newton ) or ((( 3 nucl complex causes non ) or ( da oil company cada n ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ sommers dan newton ) OR ((( 3 nucl complex causes non ) OR ( da oil company cada n )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ sommers dan newton ) or ((( 3 nucl complex causes non ) or ( da oil company cada n ))))*.