Talvez deva tentar algumas variações de ortografia:
compared blood » comparing blood (Expandir a Pesquisa), impaired blood (Expandir a Pesquisa), combined blood (Expandir a Pesquisa)
gel compared » model compared (Expandir a Pesquisa), level compared (Expandir a Pesquisa), gel prepared (Expandir a Pesquisa)
nagal clamp » vaginal clamp (Expandir a Pesquisa)
blood ngoc » blood non (Expandir a Pesquisa), blood ngal (Expandir a Pesquisa), blood now (Expandir a Pesquisa)
naga camp » naga rama (Expandir a Pesquisa), yoga camp (Expandir a Pesquisa), naga amr (Expandir a Pesquisa)
_ nagal » _ nagpal (Expandir a Pesquisa), _ nagale (Expandir a Pesquisa), _ nagai (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
_ naga » _ nagoya (Expandir a Pesquisa)
camp a » camp _ (Expandir a Pesquisa)
j gel » j gelb (Expandir a Pesquisa), j gerl (Expandir a Pesquisa), _ gel (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: (( j gel compared blood ngoc ) OR ((( _ nagal clamp a now ) OR ( _ naga camp a now ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j gel compared blood ngoc ) OR ((( _ nagal clamp a now ) OR ( _ naga camp a now ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j gel compared blood ngoc ) OR ((( _ nagal clamp a now ) OR ( _ naga camp a now ))))*.