Talvez deva tentar algumas variações de ortografia:
semino carlos » serrano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa), emilio carlos (Expandir a Pesquisa)
metil complex » metal complex (Expandir a Pesquisa), metals complex (Expandir a Pesquisa), met complex (Expandir a Pesquisa)
complex tree » complex three (Expandir a Pesquisa), complex trex (Expandir a Pesquisa), complex trace (Expandir a Pesquisa)
carlos nava » carlos navarro (Expandir a Pesquisa), carlos eslava (Expandir a Pesquisa), carlos zavala (Expandir a Pesquisa)
tree ngoc » trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
7.2 nacl » 7.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
5 metil » 5 methyl (Expandir a Pesquisa)
c nee » c need (Expandir a Pesquisa), c neel (Expandir a Pesquisa), c neu (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 combs c nee ) OR ((( 5 metil complex tree ngoc ) OR ( 7.2 nacl semino carlos nava ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l combs c nee ) OR ((( 5 metil complex tree ngoc ) OR ( 7.2 nacl semino carlos nava ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs c nee ) OR ((( 5 metil complex tree ngoc ) OR ( 7.2 nacl semino carlos nava ))))*.