Perhaps you should try some spelling variations:
c mechatronics » _ mechatronics, 1 mechatronics, a mechatronics
29 robotics » 9 robotics, 21 robotics, 26 robotics
19 robotics » 1 robotics, 11 robotics, 12 robotics
2 robotics » _ robotics, a robotics, 2 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%((((29 robotics) OR (19 robotics))) OR (2 robotics))%c mechatronics%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%22control%((((29 robotics) OR (19 robotics))) or (2 robotics))%c mechatronics%22".
• Adding a wildcard symbol may retrieve word variants: %22control%((((29 robotics) OR (19 robotics))) or (2 robotics))%c mechatronics%22*.