Talvez deva tentar algumas variações de ortografia:
mather owen » mathew owen (Expandir a Pesquisa), matthew owen (Expandir a Pesquisa), mather ben (Expandir a Pesquisa)
marcos chen » marcos cohen (Expandir a Pesquisa), marcos chena (Expandir a Pesquisa), marcos chor (Expandir a Pesquisa)
maier viola » lanier viola (Expandir a Pesquisa), beier viola (Expandir a Pesquisa), walter viola (Expandir a Pesquisa)
j mather » j mathew (Expandir a Pesquisa), j maher (Expandir a Pesquisa), j matthew (Expandir a Pesquisa)
biol med » mol med (Expandir a Pesquisa)
j marcos » j marco (Expandir a Pesquisa), j marcus (Expandir a Pesquisa), j marc (Expandir a Pesquisa)
a maier » _ maier (Expandir a Pesquisa), a mailed (Expandir a Pesquisa)
viola d » viola de (Expandir a Pesquisa), viola _ (Expandir a Pesquisa), viola a (Expandir a Pesquisa)
owen b » owen a (Expandir a Pesquisa), owen _ (Expandir a Pesquisa), owen d (Expandir a Pesquisa)
chen a » chen ai (Expandir a Pesquisa), chen amy (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 mather owen b maier ((biol med) OR (biol res)) ) or ( j marcos chen a maier viola d ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j mather owen b maier ((biol med) OR (biol res)) ) OR ( j marcos chen a maier viola d ))*.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j mather owen b maier ((biol med) OR (biol res)) ) or ( j marcos chen a maier viola d ))*".