Talvez deva tentar algumas variações de ortografia:
large companies » listed companies (Expandir a Pesquisa)
model combined » novel combined (Expandir a Pesquisa), model combining (Expandir a Pesquisa)
companies care » companies case (Expandir a Pesquisa), companies cater (Expandir a Pesquisa), companies share (Expandir a Pesquisa)
combined laws » combined loads (Expandir a Pesquisa), combined low (Expandir a Pesquisa), combined loss (Expandir a Pesquisa)
care need » care needs (Expandir a Pesquisa)
laws new » laws now (Expandir a Pesquisa), laws e (Expandir a Pesquisa), laws how (Expandir a Pesquisa)
_ model » _ modern (Expandir a Pesquisa)
j large » j larsen (Expandir a Pesquisa), j larner (Expandir a Pesquisa), j larrey (Expandir a Pesquisa)
i vhdl » _ vhdl (Expandir a Pesquisa), a vhdl (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: (( i vhdl computer _ non ) or ((( _ model combined laws new ) or ( j large companies care need ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( i vhdl computer _ non ) OR ((( _ model combined laws new ) OR ( j large companies care need )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( i vhdl computer _ non ) or ((( _ model combined laws new ) or ( j large companies care need ))))*.