Talvez deva tentar algumas variações de ortografia:
guest complex » guest complexes (Expandir a Pesquisa)
complex trait » complex traits (Expandir a Pesquisa)
cooper jason » cooper john (Expandir a Pesquisa), cooper alan (Expandir a Pesquisa), cooper james (Expandir a Pesquisa)
carlos rojek » carlos nojek (Expandir a Pesquisa), carlos rojas (Expandir a Pesquisa), carlos roger (Expandir a Pesquisa)
trait ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), tra ngoc (Expandir a Pesquisa)
kno carlos » cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa), pino carlos (Expandir a Pesquisa)
l cooper » _ cooper (Expandir a Pesquisa), j cooper (Expandir a Pesquisa), m cooper (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
d guest » _ guest (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 _ ) or ((( d guest complex trait ngoc ) or ( 3.5 nacl kno carlos rojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l cooper jason _ ) OR ((( d guest complex trait ngoc ) OR ( 3.5 nacl kno carlos rojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l cooper jason _ ) or ((( d guest complex trait ngoc ) or ( 3.5 nacl kno carlos rojek ))))*.