Talvez deva tentar algumas variações de ortografia:
coulter pulse » counter pulse (Expandir a Pesquisa), alter pulse (Expandir a Pesquisa), chapter pulse (Expandir a Pesquisa)
pulse system » phase system (Expandir a Pesquisa), purpose system (Expandir a Pesquisa), base system (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
system des » system der (Expandir a Pesquisa), system de (Expandir a Pesquisa), system design (Expandir a Pesquisa)
bet drive » belt drive (Expandir a Pesquisa), belt drives (Expandir a Pesquisa), beta driven (Expandir a Pesquisa)
j coulter » _ coulter (Expandir a Pesquisa), a coulter (Expandir a Pesquisa), d coulter (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve case (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mehta (Expandir a Pesquisa), j mena (Expandir a Pesquisa)
cat dis » cat diets (Expandir a Pesquisa), cat diet (Expandir a Pesquisa)
j bet » j beth (Expandir a Pesquisa), j beta (Expandir a Pesquisa), j bett (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 bet drive system des ) OR ( j coulter pulse system des ))) OR ( j mental nerve cat dis ))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j bet drive system des ) OR ( j coulter pulse system des ))) OR ( j mental nerve cat dis ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j bet drive system des ) OR ( j coulter pulse system des ))) OR ( j mental nerve cat dis ))*.