Talvez deva tentar algumas variações de ortografia:
walter viola » walter vilella (Expandir a Pesquisa), walter villela (Expandir a Pesquisa), walter jolan (Expandir a Pesquisa)
master them » after them (Expandir a Pesquisa), master chef (Expandir a Pesquisa), master stem (Expandir a Pesquisa)
madera chem » madera rachel (Expandir a Pesquisa)
j madera » y madera (Expandir a Pesquisa), a madera (Expandir a Pesquisa), la madera (Expandir a Pesquisa)
j master » j masters (Expandir a Pesquisa), j mater (Expandir a Pesquisa), j mcmaster (Expandir a Pesquisa)
a maier » b maier (Expandir a Pesquisa), _ maier (Expandir a Pesquisa), a mailed (Expandir a Pesquisa)
maier a » maier _ (Expandir a Pesquisa)
viola m » viola _ (Expandir a Pesquisa), viola a (Expandir a Pesquisa), viola b (Expandir a Pesquisa)
chem a » ochem a (Expandir a Pesquisa), achem a (Expandir a Pesquisa), ichem a (Expandir a Pesquisa)
them a » them _ (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 madera chem a maier a m ) or ( j master them a walter viola m ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j madera chem a maier a m ) OR ( j master them a walter viola m ))*.