Talvez deva tentar algumas variações de ortografia:
carlos romero » carlos roberto (Expandir a Pesquisa)
complex tears » complex traits (Expandir a Pesquisa), complex trait (Expandir a Pesquisa), complex than (Expandir a Pesquisa)
cooper jason » cooper john (Expandir a Pesquisa), cooper alan (Expandir a Pesquisa), cooper james (Expandir a Pesquisa)
coat complex » cobalt complex (Expandir a Pesquisa), covalent complex (Expandir a Pesquisa), fact complex (Expandir a Pesquisa)
tears below » appears below (Expandir a Pesquisa), deaths below (Expandir a Pesquisa)
nino carlos » cano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), semino carlos (Expandir a Pesquisa)
nacl nino » nacl nano (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
l cooper » _ cooper (Expandir a Pesquisa), i cooper (Expandir a Pesquisa), m cooper (Expandir a Pesquisa)
jason a » jason _ (Expandir a Pesquisa)
5 coat » _ coat (Expandir a Pesquisa), a coat (Expandir a Pesquisa), 1 coat (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 l cooper jason a ) or ((( 5 coat complex tears below ) or ( 0.9 nacl nino carlos romero ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l cooper jason a ) OR ((( 5 coat complex tears below ) OR ( 0.9 nacl nino carlos romero )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l cooper jason a ) or ((( 5 coat complex tears below ) or ( 0.9 nacl nino carlos romero ))))*.