Talvez deva tentar algumas variações de ortografia:
methyl complex » metal complex (Expandir a Pesquisa), method complex (Expandir a Pesquisa), methylase complex (Expandir a Pesquisa)
combs anion » combs brandon (Expandir a Pesquisa), combs allison (Expandir a Pesquisa), combs daniel (Expandir a Pesquisa)
complex tie » complex time (Expandir a Pesquisa), complex tif (Expandir a Pesquisa), complex tio (Expandir a Pesquisa)
nino carlos » cano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), semino carlos (Expandir a Pesquisa)
carlos nota » carlos mota (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa), carlos noda (Expandir a Pesquisa)
anion net » anion na (Expandir a Pesquisa), anion ni2 (Expandir a Pesquisa)
tie ngoc » tien ngoc (Expandir a Pesquisa), tieu ngoc (Expandir a Pesquisa), thien ngoc (Expandir a Pesquisa)
nac nino » kunac nino (Expandir a Pesquisa), a nino (Expandir a Pesquisa), c nino (Expandir a Pesquisa)
7.5 nac » 7.5 nacl (Expandir a Pesquisa), 3.5 nacl (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 anion net ) OR ((( 5 methyl complex tie ngoc ) OR ( 7.5 nac nino carlos nota ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ combs anion net ) OR ((( 5 methyl complex tie ngoc ) OR ( 7.5 nac nino carlos nota ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs anion net ) OR ((( 5 methyl complex tie ngoc ) OR ( 7.5 nac nino carlos nota ))))*.