Talvez deva tentar algumas variações de ortografia:
comparing surgery » sparing surgery (Expandir a Pesquisa), conserving surgery (Expandir a Pesquisa), contouring surgery (Expandir a Pesquisa)
first comparing » fire comparing (Expandir a Pesquisa), first comparison (Expandir a Pesquisa), lost comparing (Expandir a Pesquisa)
nay computers » says computers (Expandir a Pesquisa), ray computer (Expandir a Pesquisa), can computers (Expandir a Pesquisa)
computer case » computer based (Expandir a Pesquisa), computer code (Expandir a Pesquisa), computer crime (Expandir a Pesquisa)
computers a » computers _ (Expandir a Pesquisa)
surgery now » surgery new (Expandir a Pesquisa), surgery notes (Expandir a Pesquisa)
2 computer » _ computer (Expandir a Pesquisa), a computer (Expandir a Pesquisa), 3d computer (Expandir a Pesquisa)
case non » cause non (Expandir a Pesquisa), case note (Expandir a Pesquisa), phase non (Expandir a Pesquisa)
13 first » 1 first (Expandir a Pesquisa), 19 first (Expandir a Pesquisa), 11 first (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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: (((( _ nay computers a now ) or ( 3 2 computer case non ))) or ( 13 first comparing surgery now ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ nay computers a now ) OR ( 3 2 computer case non ))) OR ( 13 first comparing surgery now )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ nay computers a now ) or ( 3 2 computer case non ))) or ( 13 first comparing surgery now ))*.