Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
complex trace » complex traces (Expandir a Pesquisa), complexed trace (Expandir a Pesquisa), complete trace (Expandir a Pesquisa)
carlos rojek » carlos nojek (Expandir a Pesquisa), carlos rojas (Expandir a Pesquisa), carlos roger (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa)
john veena » john neena (Expandir a Pesquisa), john reena (Expandir a Pesquisa), john beena (Expandir a Pesquisa)
trace ngoc » tran ngoc (Expandir a Pesquisa), thach ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa)
en carlos » leon carlos (Expandir a Pesquisa), jaen carlos (Expandir a Pesquisa), gean carlos (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
nacl » natl (Expandir a Pesquisa), nac (Expandir a Pesquisa), nucl (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 combs john veena ) or ((( 5 methyl complex trace ngoc ) or ( 3.5 nacl en carlos rojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs john veena ) OR ((( 5 methyl complex trace ngoc ) OR ( 3.5 nacl en carlos rojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs john veena ) or ((( 5 methyl complex trace ngoc ) or ( 3.5 nacl en carlos rojek ))))*.