Talvez deva tentar algumas variações de ortografia:
complex trace » complex traces (Expandir a Pesquisa), complexed trace (Expandir a Pesquisa), complete trace (Expandir a Pesquisa)
metil complex » metal complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa), met complex (Expandir a Pesquisa)
carlos merino » carlos americo (Expandir a Pesquisa), carlos marin (Expandir a Pesquisa), carlos medina (Expandir a Pesquisa)
pina carlos » pena carlos (Expandir a Pesquisa), pineda carlos (Expandir a Pesquisa), ospina carlos (Expandir a Pesquisa)
combs john » coombs john (Expandir a Pesquisa), combes john (Expandir a Pesquisa), coombes john (Expandir a Pesquisa)
trace age » race age (Expandir a Pesquisa), trace image (Expandir a Pesquisa), trachea age (Expandir a Pesquisa)
nacl pina » nacl na (Expandir a Pesquisa), nacl para (Expandir a Pesquisa)
john net » john new (Expandir a Pesquisa), john neetu (Expandir a Pesquisa), john asnet (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
5 metil » 5 methyl (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 e combs john net ) or ((( 5 metil complex trace age ) or ( 3.5 nacl pina carlos merino ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs john net ) OR ((( 5 metil complex trace age ) OR ( 3.5 nacl pina carlos merino )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs john net ) or ((( 5 metil complex trace age ) or ( 3.5 nacl pina carlos merino ))))*.