Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
complex tetrel » complex tetrex (Expandir a Pesquisa), complex tetramer (Expandir a Pesquisa), complex tethered (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
camps non » camps font (Expandir a Pesquisa), camps joan (Expandir a Pesquisa), camps pons (Expandir a Pesquisa)
nac knopf » a knopf (Expandir a Pesquisa)
l camps » l campos (Expandir a Pesquisa), _ camps (Expandir a Pesquisa), e camps (Expandir a Pesquisa)
non net » non nest (Expandir a Pesquisa), con net (Expandir a Pesquisa), anion net (Expandir a Pesquisa)
7.2 nac » 7.2 nacl (Expandir a Pesquisa)
ngoc » ngo (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 camps non net ) or ((( 5 methyl complex tetrel ngoc ) or ( 7.2 nac knopf carlos noa ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l camps non net ) OR ((( 5 methyl complex tetrel ngoc ) OR ( 7.2 nac knopf carlos noa )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l camps non net ) or ((( 5 methyl complex tetrel ngoc ) or ( 7.2 nac knopf carlos noa ))))*.