Talvez deva tentar algumas variações de ortografia:
nacl comparing » al comparing (Expandir a Pesquisa), all comparing (Expandir a Pesquisa), rachel comparing (Expandir a Pesquisa)
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methanol complex (Expandir a Pesquisa)
comparing care » comparing case (Expandir a Pesquisa), comparing cancer (Expandir a Pesquisa), comparing change (Expandir a Pesquisa)
complex van » complex vapb (Expandir a Pesquisa), complex via (Expandir a Pesquisa), complex v (Expandir a Pesquisa)
cambio non » cambio con (Expandir a Pesquisa), cambio nota (Expandir a Pesquisa), cambio en (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
care new » care need (Expandir a Pesquisa)
non net » non nest (Expandir a Pesquisa), con net (Expandir a Pesquisa), anion net (Expandir a Pesquisa)
van ngo » van ngoc (Expandir a Pesquisa), toan ngo (Expandir a Pesquisa)
j el » j l (Expandir a Pesquisa), j e (Expandir a Pesquisa), j al (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 el cambio non net ) or ((( n methyl complex van ngo ) or ( 3.5 nacl comparing care new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j el cambio non net ) OR ((( n methyl complex van ngo ) OR ( 3.5 nacl comparing care new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j el cambio non net ) or ((( n methyl complex van ngo ) or ( 3.5 nacl comparing care new ))))*.