Talvez deva tentar algumas variações de ortografia:
carlos romero » carlos roberto (Expandir a Pesquisa)
neco complex » neck complex (Expandir a Pesquisa), recor complex (Expandir a Pesquisa), co complex (Expandir a Pesquisa)
complex than » complex trait (Expandir a Pesquisa)
nabr carlos » najar carlos (Expandir a Pesquisa), mar carlos (Expandir a Pesquisa), nassar carlos (Expandir a Pesquisa)
than ngoc » thanh ngoc (Expandir a Pesquisa), thuan ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
j cooper » _ cooper (Expandir a Pesquisa), i cooper (Expandir a Pesquisa), m cooper (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
r neco » r neto (Expandir a Pesquisa), _ neco (Expandir a Pesquisa), r nectow (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 j cooper john a ) or ((( r neco complex than ngoc ) or ( 7.5 nacl nabr carlos romero ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j cooper john a ) OR ((( r neco complex than ngoc ) OR ( 7.5 nacl nabr carlos romero )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j cooper john a ) or ((( r neco complex than ngoc ) or ( 7.5 nacl nabr carlos romero ))))*.