Talvez deva tentar algumas variações de ortografia:
thoracic cardiovascular » thoracic endovascular (Expandir a Pesquisa)
cardiovascular survey » cardiovascular surveys (Expandir a Pesquisa), cardiovascular surgery (Expandir a Pesquisa), cardiovascular surgeon (Expandir a Pesquisa)
survey pediatric » surgery pediatric (Expandir a Pesquisa), supply pediatric (Expandir a Pesquisa), society pediatric (Expandir a Pesquisa)
pediatric card » pediatric care (Expandir a Pesquisa), pediatric cardio (Expandir a Pesquisa), pediatric case (Expandir a Pesquisa)
suen thoracic » open thoracic (Expandir a Pesquisa), human thoracic (Expandir a Pesquisa), main thoracic (Expandir a Pesquisa)
card surg » card sort (Expandir a Pesquisa)
surg anna » berg anna (Expandir a Pesquisa), borg anna (Expandir a Pesquisa), birg anna (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: suen thoracic cardiovascular survey pediatric card surg anna~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: suen thoracic cardiovascular survey pediatric card surg anna*.