Talvez deva tentar algumas variações de ortografia:
metil complex » metal complex (Expandir a Pesquisa), medial complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa)
complex trieu » complex trial (Expandir a Pesquisa), complex tree (Expandir a Pesquisa), complex tric (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
trieu ngoa » trieu ngoc (Expandir a Pesquisa), thieu nga (Expandir a Pesquisa), trieu nghi (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
carlos now » carlos noe (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa), carlos novo (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john noel (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 j hobbs john new ) or ((( 5 metil complex trieu ngoa ) or ( 3.5 nacl knopf carlos now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j j hobbs john new ) OR ((( 5 metil complex trieu ngoa ) OR ( 3.5 nacl knopf carlos now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j j hobbs john new ) or ((( 5 metil complex trieu ngoa ) or ( 3.5 nacl knopf carlos now ))))*.