Talvez deva tentar algumas variações de ortografia:
cardiovascular controls » cardiovascular control (Expandir a Pesquisa), cardiovascular congress (Expandir a Pesquisa), cardiovascular contrast (Expandir a Pesquisa)
aortic cardiovascular » thoracic cardiovascular (Expandir a Pesquisa), diabetic cardiovascular (Expandir a Pesquisa), chronic cardiovascular (Expandir a Pesquisa)
controls pediatric » controlled pediatric (Expandir a Pesquisa), congress pediatric (Expandir a Pesquisa), controls nitric (Expandir a Pesquisa)
pediatric mice » pediatric mixed (Expandir a Pesquisa), pediatric mild (Expandir a Pesquisa), pediatric office (Expandir a Pesquisa)
semin aortic » hemi aortic (Expandir a Pesquisa), german aortic (Expandir a Pesquisa), delrin aortic (Expandir a Pesquisa)
leads anne » leads alone (Expandir a Pesquisa), lea anne (Expandir a Pesquisa), leake anne (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: semin aortic cardiovascular controls pediatric mice leads anne~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: semin aortic cardiovascular controls pediatric mice leads anne*.