Talvez deva tentar algumas variações de ortografia:
control than » control test (Expandir a Pesquisa), control task (Expandir a Pesquisa), control tool (Expandir a Pesquisa)
nair clamp » nair alap (Expandir a Pesquisa)
st control » rst control (Expandir a Pesquisa), ct control (Expandir a Pesquisa), pest control (Expandir a Pesquisa)
com than » com thays (Expandir a Pesquisa), com thais (Expandir a Pesquisa), room than (Expandir a Pesquisa)
nat com » nat comm (Expandir a Pesquisa), nat2 com (Expandir a Pesquisa), eat com (Expandir a Pesquisa)
clamp a » clamp _ (Expandir a Pesquisa), clamp j (Expandir a Pesquisa)
d nair » _ nair (Expandir a Pesquisa), g nair (Expandir a Pesquisa), a nair (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), a nat (Expandir a Pesquisa)
o st » o mst (Expandir a Pesquisa), _ st (Expandir a Pesquisa), a st (Expandir a Pesquisa)
note » none (Expandir a Pesquisa), node (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 nat com than non ) or ((( d nair clamp a (note or now) ) or ( o st control than non ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nat com than non ) OR ((( d nair clamp a (note OR now) ) OR ( o st control than non )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nat com than non ) or ((( d nair clamp a (note or now) ) or ( o st control than non ))))*.