Talvez deva tentar algumas variações de ortografia:
complex learning » computer learning (Expandir a Pesquisa), complex training (Expandir a Pesquisa), complex loading (Expandir a Pesquisa)
learning eight » learning weight (Expandir a Pesquisa), learning right (Expandir a Pesquisa), learning weights (Expandir a Pesquisa)
compostos nn » compostos n (Expandir a Pesquisa), compostos de (Expandir a Pesquisa), compostos do (Expandir a Pesquisa)
l compostos » e compostos (Expandir a Pesquisa), a compostos (Expandir a Pesquisa), 2 compostos (Expandir a Pesquisa)
al complex » al complete (Expandir a Pesquisa), al complejo (Expandir a Pesquisa), metal complex (Expandir a Pesquisa)
nn neue » und neue (Expandir a Pesquisa), ins neue (Expandir a Pesquisa)
nacl y » nacl _ (Expandir a Pesquisa)
5 al » 5 yl (Expandir a Pesquisa), 5 a (Expandir a Pesquisa), 5 il (Expandir a Pesquisa)
nunez » nunes (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 compostos nn neue ) or ((( 5 al complex learning eight ) or ( 0.9 nacl y carlos nunez ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l compostos nn neue ) OR ((( 5 al complex learning eight ) OR ( 0.9 nacl y carlos nunez )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l compostos nn neue ) or ((( 5 al complex learning eight ) or ( 0.9 nacl y carlos nunez ))))*.