Perhaps you should try some spelling variations:
processing medical » processing biomedical
processing model » process model
kilby signal » kill signal, fully signal, only signal
ree jack » lee jack, jie jack

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "ree jack s. kilby signal ((processing model) OR (processing medical))*".