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 tree » complex three (Expandir a Pesquisa), complex trex (Expandir a Pesquisa), complex trace (Expandir a Pesquisa)
nabr carlos » najar carlos (Expandir a Pesquisa), nader carlos (Expandir a Pesquisa), jair carlos (Expandir a Pesquisa)
carlos nino » carlos patino (Expandir a Pesquisa), carlos merino (Expandir a Pesquisa), carlos nunez (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs c (Expandir a Pesquisa)
tree ngoc » trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
nacl nabr » nacl kbr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
e combs » sex combs (Expandir a Pesquisa)
con net » con nee (Expandir a Pesquisa), non net (Expandir a Pesquisa), con note (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 con net ) or ((( 5 methyl complex tree ngoc ) or ( 3.5 nacl nabr carlos nino ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e combs con net ) OR ((( 5 methyl complex tree ngoc ) OR ( 3.5 nacl nabr carlos nino )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e combs con net ) or ((( 5 methyl complex tree ngoc ) or ( 3.5 nacl nabr carlos nino ))))*.