Talvez deva tentar algumas variações de ortografia:
matthew chien » matthew chin (Expandir a Pesquisa), matthew chen (Expandir a Pesquisa), matthew choon (Expandir a Pesquisa)
maier viola » lanier viola (Expandir a Pesquisa), beier viola (Expandir a Pesquisa), walter viola (Expandir a Pesquisa)
mata stem » elata stem (Expandir a Pesquisa), mata se (Expandir a Pesquisa), mata sete (Expandir a Pesquisa)
a bezier » _ bezier (Expandir a Pesquisa), q bezier (Expandir a Pesquisa), λ bezier (Expandir a Pesquisa)
viola c » viola _ (Expandir a Pesquisa)
chien a » chien _ (Expandir a Pesquisa), chien c (Expandir a Pesquisa), chien i (Expandir a Pesquisa)
viola a » viola _ (Expandir a Pesquisa)
viola b » viola _ (Expandir a Pesquisa)
j mata » j matias (Expandir a Pesquisa)
stem b » stem _ (Expandir a Pesquisa), stem a (Expandir a Pesquisa), stem 1 (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 mata stem b maier viola c ) or ( j matthew chien a bezier ((viola a) OR (viola b)) ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j mata stem b maier viola c ) OR ( j matthew chien a bezier ((viola a) OR (viola b)) ))*.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j mata stem b maier viola c ) or ( j matthew chien a bezier ((viola a) OR (viola b)) ))*".