Talvez deva tentar algumas variações de ortografia:
knopf carlos » prof carlos (Expandir a Pesquisa)
complex thin » complex than (Expandir a Pesquisa), complex within (Expandir a Pesquisa), complex three (Expandir a Pesquisa)
oil complex » cell complex (Expandir a Pesquisa)
carlos joel » carlson joel (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa), carlos joao (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
thin quoc » thien quoc (Expandir a Pesquisa), thi quoc (Expandir a Pesquisa), tin quoc (Expandir a Pesquisa)
7.2 nacl » 7.5 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
5 oil » _ oil (Expandir a Pesquisa), l oil (Expandir a Pesquisa), 5 il (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 e combs john n ) or ((( 5 oil complex thin quoc ) or ( 7.2 nacl knopf carlos joel ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs john n ) OR ((( 5 oil complex thin quoc ) OR ( 7.2 nacl knopf carlos joel )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs john n ) or ((( 5 oil complex thin quoc ) or ( 7.2 nacl knopf carlos joel ))))*.