Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
carlos medina » carlos mejia (Expandir a Pesquisa)
complex tree » complex three (Expandir a Pesquisa), complex tale (Expandir a Pesquisa), complex tric (Expandir a Pesquisa)
nair carlos » jair carlos (Expandir a Pesquisa), naim carlos (Expandir a Pesquisa), vanair carlos (Expandir a Pesquisa)
comes con » comes can (Expandir a Pesquisa), comes down (Expandir a Pesquisa), comes joan (Expandir a Pesquisa)
tree ngoc » tue ngoc (Expandir a Pesquisa)
nacl nair » nacl nabr (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa), nacl naoh (Expandir a Pesquisa)
e comes » de comes (Expandir a Pesquisa), e combes (Expandir a Pesquisa), e combs (Expandir a Pesquisa)
con net » con nee (Expandir a Pesquisa), non net (Expandir a Pesquisa), upon net (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 comes con net ) or ((( 5 methyl complex tree ngoc ) or ( 3.5 nacl nair carlos medina ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j e comes con net ) OR ((( 5 methyl complex tree ngoc ) OR ( 3.5 nacl nair carlos medina )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j e comes con net ) or ((( 5 methyl complex tree ngoc ) or ( 3.5 nacl nair carlos medina ))))*.