Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methanol complex (Expandir a Pesquisa)
complex trieu » complex trial (Expandir a Pesquisa), complex tree (Expandir a Pesquisa), complex trex (Expandir a Pesquisa)
casal carlos » cabral carlos (Expandir a Pesquisa), casado carlos (Expandir a Pesquisa), casali carlo (Expandir a Pesquisa)
trieu ngoc » tieu ngoc (Expandir a Pesquisa), trieu ngoa (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa)
nacl casal » nacl caso4 (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
combs 2 » combs _ (Expandir a Pesquisa), combs c (Expandir a Pesquisa), combs b (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 2 neu ) or ((( 5 methyl complex trieu ngoc ) or ( 0.9 nacl casal carlos noa ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs 2 neu ) OR ((( 5 methyl complex trieu ngoc ) OR ( 0.9 nacl casal carlos noa )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs 2 neu ) or ((( 5 methyl complex trieu ngoc ) or ( 0.9 nacl casal carlos noa ))))*.