Talvez deva tentar algumas variações de ortografia:
compared boron » coated boron (Expandir a Pesquisa), combined boron (Expandir a Pesquisa), compared blood (Expandir a Pesquisa)
nucl compared » nacl compared (Expandir a Pesquisa), acl compared (Expandir a Pesquisa), dual compared (Expandir a Pesquisa)
boron ngoc » horn ngoc (Expandir a Pesquisa)
nayl clamp » tail clamp (Expandir a Pesquisa)
chip can » hip can (Expandir a Pesquisa), chip a (Expandir a Pesquisa), chip ce (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
j nucl » 3 nucl (Expandir a Pesquisa), j null (Expandir a Pesquisa)
j nayl » a nayl (Expandir a Pesquisa), j nay (Expandir a Pesquisa), j nail (Expandir a Pesquisa)
j nano » j nagano (Expandir a Pesquisa), j nandor (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.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j nucl compared boron ngoc ) OR ((( j nayl clamp a now ) OR ( j nano chip can new ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nucl compared boron ngoc ) OR ((( j nayl clamp a now ) OR ( j nano chip can new ))))*.