Perhaps you should try some spelling variations:
etc mechatronics » c mechatronics, data mechatronics, opto mechatronics
1 mechatronics » _ mechatronics, 1 mechanics, _ biomechatronics
2c robotics » 21 robotics, 26 robotics, 29 robotics
16 robotics » 6 robotics, 1 robotics, 11 robotics
2 robotics » _ robotics, a robotics, 6 robotics
12 robotic » 11 robotic, _ robotic, a robotic
2 robotic » _ robotic, a robotic, 3 robotic

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: %22control%((((((2c robotics) OR (2 robotics))) OR (((2 robotic) OR (12 robotic))))) OR (16 robotics))%((1 mechatronics) OR (etc mechatronics))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22control%((((((2c robotics) OR (2 robotics))) or (((2 robotic) or (12 robotic))))) or (16 robotics))%((1 mechatronics) or (etc mechatronics))%22".
• Adding a wildcard symbol may retrieve word variants: %22control%((((((2c robotics) OR (2 robotics))) or (((2 robotic) or (12 robotic))))) or (16 robotics))%((1 mechatronics) or (etc mechatronics))%22*.