Talvez deva tentar algumas variações de ortografia:
methyl complexes » metal complexes (Expandir a Pesquisa), metall complexes (Expandir a Pesquisa), methylase complexes (Expandir a Pesquisa)
complexes during » complex during (Expandir a Pesquisa), complexes using (Expandir a Pesquisa)
carlos novoa » carlos novo (Expandir a Pesquisa), carlos nova (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa)
during ngoc » duong ngoc (Expandir a Pesquisa), during neo (Expandir a Pesquisa), dung ngoc (Expandir a Pesquisa)
kno carlos » knopf carlos (Expandir a Pesquisa), cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs cody (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (Expandir a Pesquisa)
con nee » con net (Expandir a Pesquisa), con noe (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 _ combs con nee ) or ((( 5 methyl complexes during ngoc ) or ( 3.5 nacl kno carlos novoa ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs con nee ) OR ((( 5 methyl complexes during ngoc ) OR ( 3.5 nacl kno carlos novoa )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs con nee ) or ((( 5 methyl complexes during ngoc ) or ( 3.5 nacl kno carlos novoa ))))*.