Perhaps you should try some spelling variations:
computer case » computer based (Expand Search), computer code (Expand Search), computer can (Expand Search)
juan lechner » a lechner (Expand Search), juan leonel (Expand Search), j lechner (Expand Search)
claims cash » claims rasch (Expand Search), claims can (Expand Search), claims cost (Expand Search)
il computer » dal computer (Expand Search), vhdl computer (Expand Search)
combe juan » comas juan (Expand Search)
cash newts » can newts (Expand Search)
a claims » _ claims (Expand Search)
case non » cause non (Expand Search), case note (Expand Search), use non (Expand Search)
j la » j l (Expand Search), j da (Expand Search), j li (Expand Search)
j il » j l (Expand Search), j i (Expand Search), j al (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((( j la combe juan lechner ) OR ( j a claims cash newts ))) OR ( j il computer case non ))~.
• Adding a wildcard symbol may retrieve word variants: (((( j la combe juan lechner ) or ( j a claims cash newts ))) or ( j il computer case non ))*.