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 stones » complex tones (Expandir a Pesquisa), complex stone (Expandir a Pesquisa), complex histones (Expandir a Pesquisa)
charles negrao » carlos negrao (Expandir a Pesquisa), charles nora (Expandir a Pesquisa), charles neal (Expandir a Pesquisa)
stones how » stone how (Expandir a Pesquisa), stones h (Expandir a Pesquisa)
nacl diehl » nacl diet (Expandir a Pesquisa), marcel diehl (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
comps c » camps c (Expandir a Pesquisa), comps i (Expandir a Pesquisa), comps b (Expandir a Pesquisa)
c noe » c noel (Expandir a Pesquisa), c node (Expandir a Pesquisa), c 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 l comps c noe ) or ((( 5 methyl complex stones how ) or ( 3.5 nacl diehl charles negrao ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps c noe ) OR ((( 5 methyl complex stones how ) OR ( 3.5 nacl diehl charles negrao )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps c noe ) or ((( 5 methyl complex stones how ) or ( 3.5 nacl diehl charles negrao ))))*.