Talvez deva tentar algumas variações de ortografia:
serrano carlos » sorzano carlos (Expandir a Pesquisa)
complex than » complex trait (Expandir a Pesquisa)
nac serrano » a serrano (Expandir a Pesquisa), c serrano (Expandir a Pesquisa), j.c serrano (Expandir a Pesquisa)
comps john » copps john (Expandir a Pesquisa), combs john (Expandir a Pesquisa), camps johan (Expandir a Pesquisa)
carlos noe » carlos noel (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa), carlos nojek (Expandir a Pesquisa)
john joel » john jones (Expandir a Pesquisa), john john (Expandir a Pesquisa), hahn joel (Expandir a Pesquisa)
_ several » _ severe (Expandir a Pesquisa)
than ngoc » thanh ngoc (Expandir a Pesquisa), thuan ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
0.9 nac » 0.9 nacl (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 comps john joel ) or ((( _ several complex than ngoc ) or ( 0.9 nac serrano carlos noe ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps john joel ) OR ((( _ several complex than ngoc ) OR ( 0.9 nac serrano carlos noe )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps john joel ) or ((( _ several complex than ngoc ) or ( 0.9 nac serrano carlos noe ))))*.