Talvez deva tentar algumas variações de ortografia:
walter viola » walter vilella (Expandir a Pesquisa), walter villela (Expandir a Pesquisa), walter jolan (Expandir a Pesquisa)
maier biol » maier viola (Expandir a Pesquisa), maier i.l (Expandir a Pesquisa), maier il (Expandir a Pesquisa)
made them » made three (Expandir a Pesquisa), made thermal (Expandir a Pesquisa)
de maier » de maior (Expandir a Pesquisa), e maier (Expandir a Pesquisa), d maier (Expandir a Pesquisa)
maher he » maher e (Expandir a Pesquisa), maher ben (Expandir a Pesquisa), maher a (Expandir a Pesquisa)
them de » them die (Expandir a Pesquisa), them do (Expandir a Pesquisa), them deep (Expandir a Pesquisa)
maher h » maher e (Expandir a Pesquisa), maher a (Expandir a Pesquisa), maher j (Expandir a Pesquisa)
viola a » viola _ (Expandir a Pesquisa), viola b (Expandir a Pesquisa)
j made » j mader (Expandir a Pesquisa), j madej (Expandir a Pesquisa), j madel (Expandir a Pesquisa)
biol m » biol 8 (Expandir a Pesquisa), fiol m (Expandir a Pesquisa), biol med (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 made them de maier biol m ) or ( j ((maher he) OR (maher h)) _ walter viola a ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j made them de maier biol m ) OR ( j ((maher he) OR (maher h)) _ walter viola a )).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j made them de maier biol m ) or ( j ((maher he) OR (maher h)) _ walter viola a ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j made them de maier biol m ) or ( j ((maher he) OR (maher h)) _ walter viola a ))*.